Curtis and Qua Creeks Productivity Analysis 2016

Suggested Citation: Thorley, J.L. and Hogan, P.M. (2016) Curtis and Qua Creeks Productivity Analysis 2016. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/1203906076.

Background

Water chemistry, periphyton growth, invertebrate and fish data were collected from Curtis and Qua Creeks during 2015-16 to assess their productivity. The fish data were collected by two or three pass depletion electrofishing.

Methods

Data Collection

The data were collected by Poisson Consulting and the Salmo Streamkeepers. The invertebrate data were processed by Westcott Environmental Services and the water chemistry and periphyton data by CARO Analytic. The data were provided in the form of an Excel database.

Data Preparation

The data were manipulated and plotted using R version 3.3.2 (R Core Team 2015).

Statistical Analysis

Hierarchical Bayesian models were fitted to the electrofishing data using R version 3.3.2 (R Core Team 2015) and JAGS 4.2.0 (Plummer 2015) which interfaced with each other via jaggernaut 2.5.0 (Thorley 2013). For additional information on hierarchical Bayesian modelling in the BUGS language, of which JAGS uses a dialect, the reader is referred to Kery and Schaub (2011, 41–44).

Unless indicated otherwise, the models used prior distributions that were vague in the sense that they did not affect the posterior distributions (Kery and Schaub 2011, 36). The posterior distributions were estimated from a minimum of 1,000 Markov Chain Monte Carlo (MCMC) samples thinned from the second halves of three chains (Kery and Schaub 2011, 38–40). Model convergence was confirmed by ensuring that Rhat (Kery and Schaub 2011, 40) was less than 1.1 for each of the parameters in the model (Kery and Schaub 2011, 61). Where relevant, model adequacy was confirmed by examination of residual plots.

The posterior distributions of the fixed (Kery and Schaub 2011, 75) parameters are summarised in terms of a point estimate (mean), lower and upper 95% credible limits (2.5th and 97.5th percentiles), the standard deviation (SD), percent relative error (half the 95% credible interval as a percent of the point estimate) and significance (Kery and Schaub 2011, 37, 42).

Variable selection was achieved by dropping fixed (Kery and Schaub 2011, 77–82) variables with two-sided p-values \(\geq\) 0.05 (Kery and Schaub 2011, 37, 42) and random variables with percent relative errors \(\geq\) 80%. The Deviance Information Criterion (DIC) was not used because it is of questionable validity when applied to hierarchical models (Kery and Schaub 2011, 469).

The results are displayed graphically by plotting the modeled relationships between particular variables and the response with 95% credible intervals (CRIs) with the remaining variables held constant. In general, continuous and discrete fixed variables are held constant at their mean and first level values respectively while random variables are held constant at their typical values (expected values of the underlying hyperdistributions) (Kery and Schaub 2011, 77–82). Where informative the influence of particular variables is expressed in terms of the effect size (i.e., percent change in the response variable) with 95% CRIs (Bradford, Korman, and Higgins 2005).

Model Descriptions

Rainbow Trout Density

The density of Rainbow Trout each site was estimated using a removal model. Key assumptions of the removal model include:

Preliminary analyses indicated that year was not a significant predictor of density and creek was not significant predictor of efficiency.

Model Code

The JAGS model code, which uses a series of naming conventions, is presented below.

Rainbow Trout Density

Variable/Parameter Description
bDensity Intercept for log(eDensity)
bDensityCreek[i] Effect of ith Creek on bDensity
bDensitySite[i] Effect of ith Site on bDensity
bEfficiency Intercept for logit(eEfficiency)
bEfficiencyYear[i] Effect of ith Year on bEfficiency
Catch[i, j] Catch on jth pass at ith site visit
Creek Creek on ith site visit
eAbundance[i] Expected total number of fish at ith site visit
eDensity[i] Expected density at ith site visit
eEfficiency[i] Expected efficiency during ith site visit
eRemaining[i, j] Expected number of fish remaining after jth pass at ith site visit
Length Site length at ith site visit
sDensitySite SD of effect of Site on bDensity
Site Site on ith site visit
Year Year on ith site visit
Rainbow Trout Density - Model1
model{
  bEfficiency ~ dnorm(0, 5^-2)
  bDensity ~ dnorm(0, 5^-2)

  bEfficiencyYear[1] <- 0
  for (i in 2:nYear) {
    bEfficiencyYear[i] ~ dnorm(0, 5^-2)
  }

  bDensityCreek[1] <- 0
  for (i in 2:nCreek) {
    bDensityCreek[i] ~ dnorm(0, 5^-2)
  }

  sDensitySite ~ dunif(0, 5)
  for (i in 1:nSite) {
    bDensitySite[i] ~ dnorm(0, sDensitySite^-2)
  }

  for (i in 1:length(Length)) {
    logit(eEfficiency[i]) <- bEfficiency + bEfficiencyYear[Year[i]]
    log(eDensity[i]) <- bDensity + bDensitySite[Site[i]]  + bDensityCreek[Creek[i]]

    eAbundance[i] ~ dpois(eDensity[i] * Length[i])
    eRemaining[i,1] <- eAbundance[i]

    for(j in 1:nPass) {
      Catch[i,j] ~ dbin(eEfficiency[i], eRemaining[i,j])
      eRemaining[i,j+1] <- eRemaining[i,j] - Catch[i,j]
    }
  }
}

Results

Model Parameters

The posterior distributions for the fixed (Kery and Schaub 2011 p. 75) parameters in each model are summarised below.

Rainbow Trout Density

Parameter Estimate Lower Upper SD Error Significance
bDensity -0.0480 -0.4498 0.3511 0.1990 830 0.8067
bDensityCreek[2] 0.3745 -0.1009 0.8740 0.2430 130 0.1280
bEfficiency 0.3540 -0.1690 0.9010 0.2920 150 0.2334
bEfficiencyYear[2] -1.2360 -1.8350 -0.6350 0.3050 49 0.0007
sDensitySite 0.2594 0.0482 0.6204 0.1474 110 0.0007
Convergence Iterations
1.08 1000

Figures

Temperature

figures/temperature/temperature.png
Figure 1. Hourly water temperature by year, creek and location.

Periphyton

figures/periphyton/periphyton.png
Figure 2. Periphyton chlorophyll-A by year, series, date, creek and location.

Benthic Invertebrates

figures/benthic/ept.png
Figure 3. Number of Ephemeroptera, Plecoptera and Trichoptera from three minute standard kick sample in 2015 by year, creek and location.
figures/benthic/shannon.png
Figure 4. Shannon Diversity Index in 2015 by year, creek and location.

Rainbow Trout Length-Weight

figures/fish/length.png
Figure 5. Length-frequency for electrofished Rainbow Trout by year, creek and location.
figures/fish/condition.png
Figure 6. Body mass by fork length for electrofished Rainbow Trout by year, creek and location.

Rainbow Trout Density

figures/ef/density.png
Figure 7. Lineal density of Rainbow Trout by creek and location.
figures/ef/efficiency.png
Figure 8. Capture efficiency of Rainbow Trout by year.

Chemical

figures/chemical/np-cc.png
Figure 9. Total nitrogen and phosphorus (as P) concentrations in Curtis Creek by year, month and location.
figures/chemical/np-qc.png
Figure 10. Total nitrogen and phosphorus (as P) concentrations in Qua Creek by year, month and location.

Tables

Benthic Invertebrates

Date Waterbody Location Taxon Family Count PercentSubsampled
2015-09-18 Curtis Creek Lower Coleoptera Elmidae 8 20
2015-09-18 Curtis Creek Lower Diptera Ceratopogonidae 1 20
2015-09-18 Curtis Creek Lower Diptera Chironomidae 147 20
2015-09-18 Curtis Creek Lower Diptera Psychodidae 0 20
2015-09-18 Curtis Creek Lower Diptera Tipulidae 5 20
2015-09-18 Curtis Creek Lower Ephemeroptera Ameletidae 11 20
2015-09-18 Curtis Creek Lower Ephemeroptera Baetidae 46 20
2015-09-18 Curtis Creek Lower Ephemeroptera Ephemerellidae 9 20
2015-09-18 Curtis Creek Lower Ephemeroptera Heptageniidae 1 20
2015-09-18 Curtis Creek Lower Ephemeroptera Leptophlebiidae 1 20
2015-09-18 Curtis Creek Lower Ephemeroptera NA 14 20
2015-09-18 Curtis Creek Lower Hydracarina NA 5 20
2015-09-18 Curtis Creek Lower Oligochaeta NA 2 20
2015-09-18 Curtis Creek Lower Ostracoda NA 57 20
2015-09-18 Curtis Creek Lower Plecoptera Chloroperlidae 4 20
2015-09-18 Curtis Creek Lower Plecoptera NA 22 20
2015-09-18 Curtis Creek Lower Plecoptera Nemouridae 8 20
2015-09-18 Curtis Creek Lower Plecoptera Peltoperlidae 2 20
2015-09-18 Curtis Creek Lower Plecoptera Perlidae 1 20
2015-09-18 Curtis Creek Lower Plecoptera Perlodidae 0 20
2015-09-18 Curtis Creek Lower Trichoptera Glossosomatidae 8 20
2015-09-18 Curtis Creek Lower Trichoptera Hydropsychidae 6 20
2015-09-18 Curtis Creek Lower Trichoptera Limnephilidae 5 20
2015-09-18 Curtis Creek Lower Trichoptera Rhyacophilidae 17 20
2015-09-18 Curtis Creek Lower Trichoptera Brachycentridae 1 20
2015-09-18 Curtis Creek Lower Trichoptera NA 0 20
2016-09-13 Curtis Creek Lower Coleoptera Elmidae (larvae and adults) 6 29
2016-09-13 Curtis Creek Lower Diptera Ceratopogonidae 0 29
2016-09-13 Curtis Creek Lower Diptera Chironomidae 72 29
2016-09-13 Curtis Creek Lower Diptera NA 2 29
2016-09-13 Curtis Creek Lower Diptera Psychodidae 0 29
2016-09-13 Curtis Creek Lower Diptera Simuliidae 0 29
2016-09-13 Curtis Creek Lower Diptera Tipulidae 2 29
2016-09-13 Curtis Creek Lower Ephemeroptera Ameletidae 8 29
2016-09-13 Curtis Creek Lower Ephemeroptera Baetidae 16 29
2016-09-13 Curtis Creek Lower Ephemeroptera Ephemerellidae 18 29
2016-09-13 Curtis Creek Lower Ephemeroptera Heptageniidae 0 29
2016-09-13 Curtis Creek Lower Ephemeroptera NA 95 29
2016-09-13 Curtis Creek Lower Hydracarina NA 7 29
2016-09-13 Curtis Creek Lower Ostracoda NA 23 29
2016-09-13 Curtis Creek Lower Plecoptera Chloroperlidae 0 29
2016-09-13 Curtis Creek Lower Plecoptera NA 55 29
2016-09-13 Curtis Creek Lower Plecoptera Nemouridae 6 29
2016-09-13 Curtis Creek Lower Plecoptera Peltoperlidae 0 29
2016-09-13 Curtis Creek Lower Trichoptera Glossosomatidae 1 29
2016-09-13 Curtis Creek Lower Trichoptera Hydropsychidae 1 29
2016-09-13 Curtis Creek Lower Trichoptera Limnephilidae 3 29
2016-09-13 Curtis Creek Lower Trichoptera Rhyacophilidae 6 29
2016-09-13 Curtis Creek Lower Trichoptera Brachycentridae 0 29
2016-09-13 Curtis Creek Lower Trichoptera NA 7 29
2015-09-18 Curtis Creek Middle Coleoptera Elmidae 2 7
2015-09-18 Curtis Creek Middle Diptera Ceratopogonidae 0 7
2015-09-18 Curtis Creek Middle Diptera Chironomidae 202 7
2015-09-18 Curtis Creek Middle Diptera Psychodidae 0 7
2015-09-18 Curtis Creek Middle Diptera Tipulidae 2 7
2015-09-18 Curtis Creek Middle Ephemeroptera Ameletidae 4 7
2015-09-18 Curtis Creek Middle Ephemeroptera Baetidae 9 7
2015-09-18 Curtis Creek Middle Ephemeroptera Ephemerellidae 4 7
2015-09-18 Curtis Creek Middle Ephemeroptera Heptageniidae 4 7
2015-09-18 Curtis Creek Middle Ephemeroptera Leptophlebiidae 2 7
2015-09-18 Curtis Creek Middle Ephemeroptera NA 25 7
2015-09-18 Curtis Creek Middle Hydracarina NA 2 7
2015-09-18 Curtis Creek Middle Oligochaeta NA 1 7
2015-09-18 Curtis Creek Middle Ostracoda NA 7 7
2015-09-18 Curtis Creek Middle Plecoptera Chloroperlidae 8 7
2015-09-18 Curtis Creek Middle Plecoptera NA 5 7
2015-09-18 Curtis Creek Middle Plecoptera Nemouridae 22 7
2015-09-18 Curtis Creek Middle Plecoptera Peltoperlidae 0 7
2015-09-18 Curtis Creek Middle Plecoptera Perlidae 0 7
2015-09-18 Curtis Creek Middle Plecoptera Perlodidae 1 7
2015-09-18 Curtis Creek Middle Trichoptera Glossosomatidae 3 7
2015-09-18 Curtis Creek Middle Trichoptera Hydropsychidae 0 7
2015-09-18 Curtis Creek Middle Trichoptera Limnephilidae 1 7
2015-09-18 Curtis Creek Middle Trichoptera Rhyacophilidae 5 7
2015-09-18 Curtis Creek Middle Trichoptera Brachycentridae 1 7
2015-09-18 Curtis Creek Middle Trichoptera NA 2 7
2016-09-13 Curtis Creek Middle Coleoptera Elmidae (larvae and adults) 1 10
2016-09-13 Curtis Creek Middle Diptera Ceratopogonidae 1 10
2016-09-13 Curtis Creek Middle Diptera Chironomidae 119 10
2016-09-13 Curtis Creek Middle Diptera NA 0 10
2016-09-13 Curtis Creek Middle Diptera Psychodidae 0 10
2016-09-13 Curtis Creek Middle Diptera Simuliidae 0 10
2016-09-13 Curtis Creek Middle Diptera Tipulidae 0 10
2016-09-13 Curtis Creek Middle Ephemeroptera Ameletidae 2 10
2016-09-13 Curtis Creek Middle Ephemeroptera Baetidae 0 10
2016-09-13 Curtis Creek Middle Ephemeroptera Ephemerellidae 4 10
2016-09-13 Curtis Creek Middle Ephemeroptera Heptageniidae 4 10
2016-09-13 Curtis Creek Middle Ephemeroptera NA 63 10
2016-09-13 Curtis Creek Middle Hydracarina NA 7 10
2016-09-13 Curtis Creek Middle Ostracoda NA 4 10
2016-09-13 Curtis Creek Middle Plecoptera Chloroperlidae 1 10
2016-09-13 Curtis Creek Middle Plecoptera NA 45 10
2016-09-13 Curtis Creek Middle Plecoptera Nemouridae 29 10
2016-09-13 Curtis Creek Middle Plecoptera Peltoperlidae 0 10
2016-09-13 Curtis Creek Middle Trichoptera Glossosomatidae 5 10
2016-09-13 Curtis Creek Middle Trichoptera Hydropsychidae 2 10
2016-09-13 Curtis Creek Middle Trichoptera Limnephilidae 3 10
2016-09-13 Curtis Creek Middle Trichoptera Rhyacophilidae 4 10
2016-09-13 Curtis Creek Middle Trichoptera Brachycentridae 0 10
2016-09-13 Curtis Creek Middle Trichoptera NA 13 10
2015-09-18 Curtis Creek Upper Coleoptera Elmidae 0 11
2015-09-18 Curtis Creek Upper Diptera Ceratopogonidae 0 11
2015-09-18 Curtis Creek Upper Diptera Chironomidae 186 11
2015-09-18 Curtis Creek Upper Diptera Psychodidae 0 11
2015-09-18 Curtis Creek Upper Diptera Tipulidae 4 11
2015-09-18 Curtis Creek Upper Ephemeroptera Ameletidae 4 11
2015-09-18 Curtis Creek Upper Ephemeroptera Baetidae 17 11
2015-09-18 Curtis Creek Upper Ephemeroptera Ephemerellidae 16 11
2015-09-18 Curtis Creek Upper Ephemeroptera Heptageniidae 1 11
2015-09-18 Curtis Creek Upper Ephemeroptera Leptophlebiidae 0 11
2015-09-18 Curtis Creek Upper Ephemeroptera NA 12 11
2015-09-18 Curtis Creek Upper Hydracarina NA 10 11
2015-09-18 Curtis Creek Upper Oligochaeta NA 8 11
2015-09-18 Curtis Creek Upper Ostracoda NA 7 11
2015-09-18 Curtis Creek Upper Plecoptera Chloroperlidae 3 11
2015-09-18 Curtis Creek Upper Plecoptera NA 18 11
2015-09-18 Curtis Creek Upper Plecoptera Nemouridae 9 11
2015-09-18 Curtis Creek Upper Plecoptera Peltoperlidae 0 11
2015-09-18 Curtis Creek Upper Plecoptera Perlidae 0 11
2015-09-18 Curtis Creek Upper Plecoptera Perlodidae 1 11
2015-09-18 Curtis Creek Upper Trichoptera Glossosomatidae 3 11
2015-09-18 Curtis Creek Upper Trichoptera Hydropsychidae 2 11
2015-09-18 Curtis Creek Upper Trichoptera Limnephilidae 1 11
2015-09-18 Curtis Creek Upper Trichoptera Rhyacophilidae 7 11
2015-09-18 Curtis Creek Upper Trichoptera Brachycentridae 0 11
2015-09-18 Curtis Creek Upper Trichoptera NA 4 11
2016-09-13 Curtis Creek Upper Coleoptera Elmidae (larvae and adults) 3 43
2016-09-13 Curtis Creek Upper Diptera Ceratopogonidae 1 43
2016-09-13 Curtis Creek Upper Diptera Chironomidae 78 43
2016-09-13 Curtis Creek Upper Diptera NA 1 43
2016-09-13 Curtis Creek Upper Diptera Psychodidae 1 43
2016-09-13 Curtis Creek Upper Diptera Simuliidae 0 43
2016-09-13 Curtis Creek Upper Diptera Tipulidae 1 43
2016-09-13 Curtis Creek Upper Ephemeroptera Ameletidae 32 43
2016-09-13 Curtis Creek Upper Ephemeroptera Baetidae 4 43
2016-09-13 Curtis Creek Upper Ephemeroptera Ephemerellidae 3 43
2016-09-13 Curtis Creek Upper Ephemeroptera Heptageniidae 9 43
2016-09-13 Curtis Creek Upper Ephemeroptera NA 93 43
2016-09-13 Curtis Creek Upper Hydracarina NA 11 43
2016-09-13 Curtis Creek Upper Ostracoda NA 0 43
2016-09-13 Curtis Creek Upper Plecoptera Chloroperlidae 0 43
2016-09-13 Curtis Creek Upper Plecoptera NA 39 43
2016-09-13 Curtis Creek Upper Plecoptera Nemouridae 4 43
2016-09-13 Curtis Creek Upper Plecoptera Peltoperlidae 1 43
2016-09-13 Curtis Creek Upper Trichoptera Glossosomatidae 0 43
2016-09-13 Curtis Creek Upper Trichoptera Hydropsychidae 0 43
2016-09-13 Curtis Creek Upper Trichoptera Limnephilidae 0 43
2016-09-13 Curtis Creek Upper Trichoptera Rhyacophilidae 6 43
2016-09-13 Curtis Creek Upper Trichoptera Brachycentridae 0 43
2016-09-13 Curtis Creek Upper Trichoptera NA 15 43
2015-09-18 Qua Creek Lower Coleoptera Elmidae 10 18
2015-09-18 Qua Creek Lower Diptera Ceratopogonidae 2 18
2015-09-18 Qua Creek Lower Diptera Chironomidae 149 18
2015-09-18 Qua Creek Lower Diptera Psychodidae 0 18
2015-09-18 Qua Creek Lower Diptera Tipulidae 4 18
2015-09-18 Qua Creek Lower Ephemeroptera Ameletidae 13 18
2015-09-18 Qua Creek Lower Ephemeroptera Baetidae 49 18
2015-09-18 Qua Creek Lower Ephemeroptera Ephemerellidae 6 18
2015-09-18 Qua Creek Lower Ephemeroptera Heptageniidae 5 18
2015-09-18 Qua Creek Lower Ephemeroptera Leptophlebiidae 1 18
2015-09-18 Qua Creek Lower Ephemeroptera NA 22 18
2015-09-18 Qua Creek Lower Hydracarina NA 6 18
2015-09-18 Qua Creek Lower Oligochaeta NA 4 18
2015-09-18 Qua Creek Lower Ostracoda NA 12 18
2015-09-18 Qua Creek Lower Plecoptera Chloroperlidae 5 18
2015-09-18 Qua Creek Lower Plecoptera NA 21 18
2015-09-18 Qua Creek Lower Plecoptera Nemouridae 9 18
2015-09-18 Qua Creek Lower Plecoptera Peltoperlidae 0 18
2015-09-18 Qua Creek Lower Plecoptera Perlidae 0 18
2015-09-18 Qua Creek Lower Plecoptera Perlodidae 0 18
2015-09-18 Qua Creek Lower Trichoptera Glossosomatidae 5 18
2015-09-18 Qua Creek Lower Trichoptera Hydropsychidae 0 18
2015-09-18 Qua Creek Lower Trichoptera Limnephilidae 1 18
2015-09-18 Qua Creek Lower Trichoptera Rhyacophilidae 4 18
2015-09-18 Qua Creek Lower Trichoptera Brachycentridae 1 18
2015-09-18 Qua Creek Lower Trichoptera NA 5 18
2016-09-13 Qua Creek Lower Coleoptera Elmidae (larvae and adults) 6 8
2016-09-13 Qua Creek Lower Diptera Ceratopogonidae 1 8
2016-09-13 Qua Creek Lower Diptera Chironomidae 226 8
2016-09-13 Qua Creek Lower Diptera NA 1 8
2016-09-13 Qua Creek Lower Diptera Psychodidae 0 8
2016-09-13 Qua Creek Lower Diptera Simuliidae 0 8
2016-09-13 Qua Creek Lower Diptera Tipulidae 5 8
2016-09-13 Qua Creek Lower Ephemeroptera Ameletidae 5 8
2016-09-13 Qua Creek Lower Ephemeroptera Baetidae 0 8
2016-09-13 Qua Creek Lower Ephemeroptera Ephemerellidae 3 8
2016-09-13 Qua Creek Lower Ephemeroptera Heptageniidae 2 8
2016-09-13 Qua Creek Lower Ephemeroptera NA 31 8
2016-09-13 Qua Creek Lower Hydracarina NA 13 8
2016-09-13 Qua Creek Lower Ostracoda NA 4 8
2016-09-13 Qua Creek Lower Plecoptera Chloroperlidae 0 8
2016-09-13 Qua Creek Lower Plecoptera NA 29 8
2016-09-13 Qua Creek Lower Plecoptera Nemouridae 0 8
2016-09-13 Qua Creek Lower Plecoptera Peltoperlidae 0 8
2016-09-13 Qua Creek Lower Trichoptera Glossosomatidae 3 8
2016-09-13 Qua Creek Lower Trichoptera Hydropsychidae 0 8
2016-09-13 Qua Creek Lower Trichoptera Limnephilidae 0 8
2016-09-13 Qua Creek Lower Trichoptera Rhyacophilidae 1 8
2016-09-13 Qua Creek Lower Trichoptera Brachycentridae 0 8
2016-09-13 Qua Creek Lower Trichoptera NA 3 8
2015-09-18 Qua Creek Middle Coleoptera Elmidae 5 24
2015-09-18 Qua Creek Middle Diptera Ceratopogonidae 0 24
2015-09-18 Qua Creek Middle Diptera Chironomidae 189 24
2015-09-18 Qua Creek Middle Diptera Psychodidae 1 24
2015-09-18 Qua Creek Middle Diptera Tipulidae 1 24
2015-09-18 Qua Creek Middle Ephemeroptera Ameletidae 15 24
2015-09-18 Qua Creek Middle Ephemeroptera Baetidae 21 24
2015-09-18 Qua Creek Middle Ephemeroptera Ephemerellidae 2 24
2015-09-18 Qua Creek Middle Ephemeroptera Heptageniidae 6 24
2015-09-18 Qua Creek Middle Ephemeroptera Leptophlebiidae 3 24
2015-09-18 Qua Creek Middle Ephemeroptera NA 17 24
2015-09-18 Qua Creek Middle Hydracarina NA 7 24
2015-09-18 Qua Creek Middle Oligochaeta NA 0 24
2015-09-18 Qua Creek Middle Ostracoda NA 6 24
2015-09-18 Qua Creek Middle Plecoptera Chloroperlidae 2 24
2015-09-18 Qua Creek Middle Plecoptera NA 18 24
2015-09-18 Qua Creek Middle Plecoptera Nemouridae 6 24
2015-09-18 Qua Creek Middle Plecoptera Peltoperlidae 0 24
2015-09-18 Qua Creek Middle Plecoptera Perlidae 0 24
2015-09-18 Qua Creek Middle Plecoptera Perlodidae 0 24
2015-09-18 Qua Creek Middle Trichoptera Glossosomatidae 0 24
2015-09-18 Qua Creek Middle Trichoptera Hydropsychidae 1 24
2015-09-18 Qua Creek Middle Trichoptera Limnephilidae 4 24
2015-09-18 Qua Creek Middle Trichoptera Rhyacophilidae 1 24
2015-09-18 Qua Creek Middle Trichoptera Brachycentridae 0 24
2015-09-18 Qua Creek Middle Trichoptera NA 8 24
2016-09-13 Qua Creek Middle Coleoptera Elmidae (larvae and adults) 5 9
2016-09-13 Qua Creek Middle Diptera Ceratopogonidae 0 9
2016-09-13 Qua Creek Middle Diptera Chironomidae 108 9
2016-09-13 Qua Creek Middle Diptera NA 0 9
2016-09-13 Qua Creek Middle Diptera Psychodidae 0 9
2016-09-13 Qua Creek Middle Diptera Simuliidae 1 9
2016-09-13 Qua Creek Middle Diptera Tipulidae 4 9
2016-09-13 Qua Creek Middle Ephemeroptera Ameletidae 1 9
2016-09-13 Qua Creek Middle Ephemeroptera Baetidae 3 9
2016-09-13 Qua Creek Middle Ephemeroptera Ephemerellidae 7 9
2016-09-13 Qua Creek Middle Ephemeroptera Heptageniidae 7 9
2016-09-13 Qua Creek Middle Ephemeroptera NA 54 9
2016-09-13 Qua Creek Middle Hydracarina NA 10 9
2016-09-13 Qua Creek Middle Ostracoda NA 0 9
2016-09-13 Qua Creek Middle Plecoptera Chloroperlidae 0 9
2016-09-13 Qua Creek Middle Plecoptera NA 100 9
2016-09-13 Qua Creek Middle Plecoptera Nemouridae 5 9
2016-09-13 Qua Creek Middle Plecoptera Peltoperlidae 0 9
2016-09-13 Qua Creek Middle Trichoptera Glossosomatidae 4 9
2016-09-13 Qua Creek Middle Trichoptera Hydropsychidae 11 9
2016-09-13 Qua Creek Middle Trichoptera Limnephilidae 0 9
2016-09-13 Qua Creek Middle Trichoptera Rhyacophilidae 4 9
2016-09-13 Qua Creek Middle Trichoptera Brachycentridae 0 9
2016-09-13 Qua Creek Middle Trichoptera NA 3 9
2015-09-18 Qua Creek Upper Coleoptera Elmidae 6 18
2015-09-18 Qua Creek Upper Diptera Ceratopogonidae 0 18
2015-09-18 Qua Creek Upper Diptera Chironomidae 183 18
2015-09-18 Qua Creek Upper Diptera Psychodidae 1 18
2015-09-18 Qua Creek Upper Diptera Tipulidae 2 18
2015-09-18 Qua Creek Upper Ephemeroptera Ameletidae 11 18
2015-09-18 Qua Creek Upper Ephemeroptera Baetidae 17 18
2015-09-18 Qua Creek Upper Ephemeroptera Ephemerellidae 9 18
2015-09-18 Qua Creek Upper Ephemeroptera Heptageniidae 9 18
2015-09-18 Qua Creek Upper Ephemeroptera Leptophlebiidae 11 18
2015-09-18 Qua Creek Upper Ephemeroptera NA 13 18
2015-09-18 Qua Creek Upper Hydracarina NA 9 18
2015-09-18 Qua Creek Upper Oligochaeta NA 0 18
2015-09-18 Qua Creek Upper Ostracoda NA 2 18
2015-09-18 Qua Creek Upper Plecoptera Chloroperlidae 7 18
2015-09-18 Qua Creek Upper Plecoptera NA 21 18
2015-09-18 Qua Creek Upper Plecoptera Nemouridae 13 18
2015-09-18 Qua Creek Upper Plecoptera Peltoperlidae 0 18
2015-09-18 Qua Creek Upper Plecoptera Perlidae 3 18
2015-09-18 Qua Creek Upper Plecoptera Perlodidae 0 18
2015-09-18 Qua Creek Upper Trichoptera Glossosomatidae 2 18
2015-09-18 Qua Creek Upper Trichoptera Hydropsychidae 0 18
2015-09-18 Qua Creek Upper Trichoptera Limnephilidae 3 18
2015-09-18 Qua Creek Upper Trichoptera Rhyacophilidae 2 18
2015-09-18 Qua Creek Upper Trichoptera Brachycentridae 0 18
2015-09-18 Qua Creek Upper Trichoptera NA 2 18
2016-09-13 Qua Creek Upper Coleoptera Elmidae (larvae and adults) 6 19
2016-09-13 Qua Creek Upper Diptera Ceratopogonidae 2 19
2016-09-13 Qua Creek Upper Diptera Chironomidae 113 19
2016-09-13 Qua Creek Upper Diptera NA 0 19
2016-09-13 Qua Creek Upper Diptera Psychodidae 0 19
2016-09-13 Qua Creek Upper Diptera Simuliidae 0 19
2016-09-13 Qua Creek Upper Diptera Tipulidae 4 19
2016-09-13 Qua Creek Upper Ephemeroptera Ameletidae 5 19
2016-09-13 Qua Creek Upper Ephemeroptera Baetidae 1 19
2016-09-13 Qua Creek Upper Ephemeroptera Ephemerellidae 1 19
2016-09-13 Qua Creek Upper Ephemeroptera Heptageniidae 1 19
2016-09-13 Qua Creek Upper Ephemeroptera NA 78 19
2016-09-13 Qua Creek Upper Hydracarina NA 28 19
2016-09-13 Qua Creek Upper Ostracoda NA 3 19
2016-09-13 Qua Creek Upper Plecoptera Chloroperlidae 0 19
2016-09-13 Qua Creek Upper Plecoptera NA 47 19
2016-09-13 Qua Creek Upper Plecoptera Nemouridae 2 19
2016-09-13 Qua Creek Upper Plecoptera Peltoperlidae 0 19
2016-09-13 Qua Creek Upper Trichoptera Glossosomatidae 11 19
2016-09-13 Qua Creek Upper Trichoptera Hydropsychidae 2 19
2016-09-13 Qua Creek Upper Trichoptera Limnephilidae 0 19
2016-09-13 Qua Creek Upper Trichoptera Rhyacophilidae 4 19
2016-09-13 Qua Creek Upper Trichoptera Brachycentridae 1 19
2016-09-13 Qua Creek Upper Trichoptera NA 6 19

Water Chemistry

Analyte Units Period Year Curtis Creek - Lower Curtis Creek - Middle Curtis Creek - Upper Qua Creek - Lower Qua Creek - Middle Qua Creek - Upper
Alkalinity, Total as CaCO3 mg/L Early 2015 22 4 5 27 23 27
Alkalinity, Total as CaCO3 mg/L Late 2015 16 5 7 25 21 25
Alkalinity, Total as CaCO3 mg/L Early 2016 8 3 3 12 10 12
Alkalinity, Total as CaCO3 mg/L Late 2016 24 4 11 27 22 25
Aluminum, total mg/L Early 2015 <0.05 0.09 <0.05 <0.05 0.07 <0.05
Aluminum, total mg/L Late 2015 0.07 0.12 0.11 <0.05 <0.05 <0.05
Aluminum, total mg/L Early 2016 0.05 0.06 0.06 <0.05 <0.05 <0.05
Aluminum, total mg/L Late 2016 0.04 0.115 0.039 0.012 0.015 0.015
Antimony, total mg/L Early 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Antimony, total mg/L Late 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Antimony, total mg/L Early 2016 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Antimony, total mg/L Late 2016 3e<05 <2e-05 3e<05 <2e-05 2e<05 <2e-05
Arsenic, total mg/L Early 2015 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005
Arsenic, total mg/L Late 2015 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005
Arsenic, total mg/L Early 2016 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005
Arsenic, total mg/L Late 2016 <1e-04 <1e-04 1e<04 1e<04 1e<04 2e<04
Barium, total mg/L Early 2015 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05
Barium, total mg/L Late 2015 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05
Barium, total mg/L Early 2016 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05
Barium, total mg/L Late 2016 0.018 0.017 0.022 0.006 0.005 0.005
Beryllium, total mg/L Early 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Beryllium, total mg/L Late 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Bismuth, total mg/L Early 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Bismuth, total mg/L Late 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Bismuth, total mg/L Early 2016 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Bismuth, total mg/L Late 2016 <2e-05 <2e-05 <2e-05 <2e-05 <2e-05 <2e-05
Boron, total mg/L Early 2015 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04
Boron, total mg/L Late 2015 <0.04 0.08 0.06 <0.04 <0.04 <0.04
Boron, total mg/L Early 2016 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04
Boron, total mg/L Late 2016 0.002 0.003 0.004 <8e-04 <8e-04 8e<04
Cadmium, total mg/L Early 2015 <1e-04 <1e-04 <1e-04 <1e-04 <1e-04 <1e-04
Cadmium, total mg/L Late 2015 <1e-04 <1e-04 <1e-04 <1e-04 <1e-04 <1e-04
Cadmium, total mg/L Early 2016 <1e-04 <1e-04 <1e-04 <1e-04 <1e-04 <1e-04
Cadmium, total mg/L Late 2016 8e<06 7e<06 5e<06 8e<06 6e<06 5e<06
Calcium, total mg/L Early 2015 7.8 <2 3.4 9.7 8.1 9.4
Calcium, total mg/L Late 2015 5.7 <2 2.6 8.4 6.7 7.8
Calcium, total mg/L Early 2016 3.7 <2 <2 5.7 4.8 5.2
Calcium, total mg/L Late 2016 9.1 2.3 4 10.3 7.9 9.2
Chromium, total mg/L Early 2015 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005
Chromium, total mg/L Late 2015 <0.005 0.016 <0.005 <0.005 <0.005 <0.005
Chromium, total mg/L Early 2016 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005
Chromium, total mg/L Late 2016 4e<04 3e<04 3e<04 2e<04 1e<04 1e<04
Cobalt, total mg/L Early 2015 <5e-04 <5e-04 <5e-04 <5e-04 <5e-04 <5e-04
Cobalt, total mg/L Late 2015 <5e-04 <5e-04 <5e-04 <5e-04 <5e-04 <5e-04
Cobalt, total mg/L Early 2016 <5e-04 <5e-04 <5e-04 <5e-04 <5e-04 <5e-04
Cobalt, total mg/L Late 2016 4e<05 0.00016 4e<05 <1e-05 <1e-05 1e<05
Conductivity (EC) uS/cm Early 2015 52 22 28 60 49 55
Conductivity (EC) uS/cm Late 2015 45 23 21 59 48 56
Conductivity (EC) uS/cm Early 2016 22 11 11 30 25 28
Conductivity (EC) uS/cm Late 2016 60 25 28 63 51 56
Copper, total mg/L Early 2015 <0.002 <0.002 <0.002 <0.002 <0.002 0.002
Copper, total mg/L Late 2015 <0.002 <0.002 0.002 <0.002 <0.002 <0.002
Copper, total mg/L Early 2016 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002
Copper, total mg/L Late 2016 2e<04 7e<04 4e<04 2e<04 2e<04 1e<04
Hardness, Total (Total as CaCO3) mg/L Early 2015 23.7 <5 10.7 26.5 22.4 25.5
Hardness, Total (Total as CaCO3) mg/L Late 2015 18.1 <5 8.3 23.4 18.7 21.6
Hardness, Total (Total as CaCO3) mg/L Early 2016 10.8 <5 <5 15.3 12.7 14
Hardness, Total (Total as CaCO3) mg/L Late 2016 27.8 9.51 12.7 28.4 21.9 25
Iron, total mg/L Early 2015 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
Iron, total mg/L Late 2015 <0.1 0.6 <0.1 <0.1 <0.1 <0.1
Iron, total mg/L Early 2016 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
Iron, total mg/L Late 2016 0.03 0.08 0.05 0.007 0.009 0.02
Lead, total mg/L Early 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Lead, total mg/L Late 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Lead, total mg/L Early 2016 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Lead, total mg/L Late 2016 <2e-05 5e<05 2e<05 <2e-05 <2e-05 <2e-05
Lithium, total mg/L Early 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Lithium, total mg/L Late 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Lithium, total mg/L Early 2016 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Lithium, total mg/L Late 2016 5e<04 6e<04 2e<04 2e<04 1e<04 1e<04
Magnesium, total mg/L Early 2015 1 0.7 0.5 0.5 0.5 0.5
Magnesium, total mg/L Late 2015 1 0.7 0.4 0.6 0.5 0.5
Magnesium, total mg/L Early 2016 0.4 0.3 0.3 0.2 0.2 0.2
Magnesium, total mg/L Late 2016 1.25 0.89 0.67 0.62 0.53 0.53
Manganese, total mg/L Early 2015 <0.002 0.004 <0.002 <0.002 0.007 0.002
Manganese, total mg/L Late 2015 <0.002 0.007 0.003 <0.002 <0.002 <0.002
Manganese, total mg/L Early 2016 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002
Manganese, total mg/L Late 2016 0.0014 0.0046 0.0032 2e<04 2e<04 5e<04
Molybdenum, total mg/L Early 2015 <0.001 <0.001 <0.001 0.001 0.008 0.002
Molybdenum, total mg/L Late 2015 <0.001 0.003 <0.001 0.002 0.001 <0.001
Molybdenum, total mg/L Early 2016 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Molybdenum, total mg/L Late 2016 9e<05 6e<05 1e<04 0.0012 0.001 0.001
Nickel, total mg/L Early 2015 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002
Nickel, total mg/L Late 2015 <0.002 0.003 0.002 <0.002 <0.002 <0.002
Nickel, total mg/L Early 2016 0.003 <0.002 <0.002 <0.002 <0.002 <0.002
Nickel, total mg/L Late 2016 3e<04 6e<04 2e<04 <4e-05 4e<05 <4e-05
Nitrate as N mg/L Early 2015 0.325 0.054 0.052 0.072 0.052 0.074
Nitrate as N mg/L Late 2015 <0.01 <0.01 <0.01 0.025 0.031 0.039
Nitrate as N mg/L Early 2016 <0.01 <0.01 0.01 0.017 <0.01 0.015
Nitrate as N mg/L Late 2016 0.012 0.011 0.028 0.047 0.041 0.054
Nitrate+Nitrite as N mg/L Early 2015 0.325 0.054 0.052 0.072 0.052 0.074
Nitrate+Nitrite as N mg/L Late 2015 <0.01 <0.01 <0.01 0.025 0.031 0.039
Nitrate+Nitrite as N mg/L Early 2016 <0.01 <0.01 0.01 0.017 <0.01 0.015
Nitrate+Nitrite as N mg/L Late 2016 0.012 0.011 0.028 0.047 0.041 0.054
Nitrite as N mg/L Early 2015 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01
Nitrite as N mg/L Late 2015 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01
Nitrite as N mg/L Early 2016 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01
Nitrite as N mg/L Late 2016 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01
Nitrogen, Dissolved Kjeldahl mg/L Early 2015 0.09 0.09 0.14 0.1 0.17 0.12
Nitrogen, Dissolved Kjeldahl mg/L Late 2015 0.06 0.08 0.14 0.09 0.07 0.08
Nitrogen, Dissolved Kjeldahl mg/L Early 2016 0.07 0.12 0.1 0.18 0.14 0.3
Nitrogen, Dissolved Kjeldahl mg/L Late 2016 0.07 0.16 0.1 <0.05 0.07 0.12
Nitrogen, Total mg/L Early 2015 0.475 0.193 0.194 0.224 0.226 0.198
Nitrogen, Total mg/L Late 2015 0.063 0.078 0.159 0.139 0.106 0.126
Nitrogen, Total mg/L Early 2016 0.141 0.09 0.138 0.23 0.198 0.232
Nitrogen, Total mg/L Late 2016 0.266 0.276 0.309 0.298 0.251 0.283
Nitrogen, Total Dissolved mg/L Early 2015 0.419 0.148 0.191 0.17 0.226 0.192
Nitrogen, Total Dissolved mg/L Late 2015 0.06 0.084 0.137 0.117 0.105 0.123
Nitrogen, Total Dissolved mg/L Early 2016 0.067 0.123 0.111 0.199 0.139 0.311
Nitrogen, Total Dissolved mg/L Late 2016 0.082 0.166 0.125 <0.05 0.109 0.172
Nitrogen, Total Kjeldahl mg/L Early 2015 0.15 0.14 0.14 0.15 0.17 0.12
Nitrogen, Total Kjeldahl mg/L Late 2015 0.06 0.08 0.16 0.11 0.08 0.09
pH pH units Early 2015 7.51 6.86 6.68 7.56 7.39 7.42
pH pH units Late 2015 7.23 6.93 6.95 7.46 7.34 7.47
pH pH units Early 2016 7.04 6.45 6.71 7.25 7.16 7.24
pH pH units Late 2016 7.43 6.77 7.16 7.54 7.44 7.49
Phosphorus, total mg/L Early 2015 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
Phosphorus, total mg/L Late 2015 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
Phosphorus, total mg/L Early 2016 <0.2 <0.2 <0.2 <0.2 <0.2 0.2
Phosphorus, total mg/L Late 2016 0.009 0.005 <0.004 <0.004 <0.004 0.005
Phosphorus, Total as P mg/L Early 2015 0.012 0.013 0.015 0.013 0.023 0.013
Phosphorus, Total as P mg/L Late 2015 0.004 0.005 0.003 0.006 0.004 0.004
Phosphorus, Total as P mg/L Early 2016 0.007 0.007 0.007 0.007 0.007 0.008
Phosphorus, Total as P mg/L Late 2016 0.005 0.006 0.005 0.007 0.005 0.005
Potassium, total mg/L Early 2015 0.5 0.4 0.5 0.9 0.9 0.9
Potassium, total mg/L Late 2015 <0.2 <0.2 <0.2 0.4 0.3 0.3
Potassium, total mg/L Early 2016 <0.2 <0.2 <0.2 0.2 0.3 0.3
Potassium, total mg/L Late 2016 0.37 0.32 0.33 0.69 0.64 0.63
Selenium, total mg/L Early 2015 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005
Selenium, total mg/L Late 2015 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005
Selenium, total mg/L Early 2016 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005
Selenium, total mg/L Late 2016 <1e-04 <1e-04 <1e-04 5e<04 3e<04 3e<04
Silicon, total mg/L Early 2015 <5 <5 <5 <5 <5 <5
Silicon, total mg/L Late 2015 <5 <5 <5 <5 <5 <5
Silicon, total mg/L Early 2016 <5 <5 <5 <5 <5 <5
Silicon, total mg/L Late 2016 2.6 2.3 2.1 3.1 2.9 2.5
Silver, total mg/L Early 2015 <5e-04 <5e-04 <5e-04 <5e-04 <5e-04 <5e-04
Silver, total mg/L Late 2015 <5e-04 <5e-04 <5e-04 <5e-04 <5e-04 <5e-04
Silver, total mg/L Early 2016 <5e-04 <5e-04 <5e-04 <5e-04 <5e-04 <5e-04
Silver, total mg/L Late 2016 <1e-05 4e<05 1e<04 <1e-05 <1e-05 <1e-05
Sodium, total mg/L Early 2015 0.7 0.6 0.5 1 1.2 0.9
Sodium, total mg/L Late 2015 0.4 0.6 0.3 0.7 0.6 0.6
Sodium, total mg/L Early 2016 <0.2 <0.2 <0.2 0.2 0.2 0.2
Sodium, total mg/L Late 2016 0.87 0.7 0.65 1.08 0.97 0.89
Strontium, total mg/L Early 2015 0.05 0.03 0.05 0.05 0.05 0.04
Strontium, total mg/L Late 2015 0.04 0.03 0.04 0.05 0.04 0.04
Strontium, total mg/L Early 2016 0.02 0.01 0.02 0.02 0.02 0.02
Strontium, total mg/L Late 2016 0.053 0.03 0.055 0.051 0.041 0.041
Sulfur, total mg/L Early 2015 21 11 <10 16 16 20
Sulfur, total mg/L Late 2015 <10 <10 <10 <10 <10 <10
Sulfur, total mg/L Early 2016 <10 <10 <10 <10 <10 <10
Sulfur, total mg/L Late 2016 0.5 0.9 0.8 <0.2 0.2 <0.2
Tellurium, total mg/L Early 2015 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002
Tellurium, total mg/L Late 2015 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002
Tellurium, total mg/L Early 2016 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002
Tellurium, total mg/L Late 2016 <4e-05 <4e-05 <4e-05 <4e-05 <4e-05 <4e-05
Thallium, total mg/L Early 2015 <2e-04 <2e-04 <2e-04 <2e-04 <2e-04 <2e-04
Thallium, total mg/L Late 2015 <2e-04 <2e-04 <2e-04 <2e-04 <2e-04 <2e-04
Thorium, total mg/L Early 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Thorium, total mg/L Late 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Thorium, total mg/L Early 2016 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Thorium, total mg/L Late 2016 <2e-05 2e<05 2e<05 <2e-05 <2e-05 <2e-05
Tin, total mg/L Early 2015 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002
Tin, total mg/L Late 2015 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002
Tin, total mg/L Early 2016 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002
Tin, total mg/L Late 2016 1e<04 1e<04 1e<04 1e<04 1e<04 7e<05
Titanium, total mg/L Early 2015 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05
Titanium, total mg/L Late 2015 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05
Titanium, total mg/L Early 2016 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05
Titanium, total mg/L Late 2016 <0.001 0.002 0.001 <0.001 <0.001 <0.001
Uranium, total mg/L Early 2015 <2e-04 <2e-04 <2e-04 <2e-04 <2e-04 <2e-04
Uranium, total mg/L Late 2015 <2e-04 <2e-04 <2e-04 <2e-04 <2e-04 <2e-04
Uranium, total mg/L Early 2016 <2e-04 <2e-04 <2e-04 <2e-04 <2e-04 <2e-04
Uranium, total mg/L Late 2016 8e<05 4e<05 5e<05 6e<05 4e<05 5e<05
Vanadium, total mg/L Early 2015 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01
Vanadium, total mg/L Late 2015 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01
Vanadium, total mg/L Early 2016 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01
Vanadium, total mg/L Late 2016 <2e-04 <2e-04 <2e-04 3e<04 2e<04 2e<04
Zinc, total mg/L Early 2015 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04
Zinc, total mg/L Late 2015 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04
Zinc, total mg/L Early 2016 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04
Zinc, total mg/L Late 2016 0.003 0.005 0.003 0.002 0.003 0.002
Zirconium, total mg/L Early 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Zirconium, total mg/L Late 2015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Zirconium, total mg/L Early 2016 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Zirconium, total mg/L Late 2016 <2e-05 2e<05 3e<05 <2e-05 <2e-05 <2e-05

Acknowledgements

The organisations and individuals whose contributions have made this analysis report possible include:

References

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