Chambers Cr at Steilacoom Lake
| Note: A key is available for this visit report. For background on ambient monitoring protocol and ambient taxa metrics, see, respectively, Benthic Macroinvertebrate Biological Monitoring Protocols for Rivers and Streams: 2001 Revision and Multi-Metric Index Development for Biological Monitoring in Washington State Streams. |
| 1) below a weir from Steilacoom Lake. 2) anadromous fish present at fish ladder. 3) Eubranchiapoda from lake in water column. 4) bottom of stream slimy with algae. 5) some adult caddis - Glossosomatidae. 6) Wein feeding the stream, draining from Steilacoom Lake. |
| temperature (deg C) | dis o winkler (mg/L) | stream flow (CFS) | pH (pH) | conductivity (umhos/cm) |
|---|---|---|---|---|
| 16.4 | 9.8 | 8.1 | 137 |
| samp type | loc type | loc no | wetted width (m) | stream gradient (%) | sample area (m^2) | RPD (m) | middepth velocity (FS) | max depth (m) | Dp (m) | canopy (%) | bottom velocity (FS) | bankfull width (m) | avg depth (m) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DKICK | riffle | 1 | 11.3 | 3.00 | 0.19 | 2.7 | 0.55 | 0.96 | 17.4 | DKICK | riffle | 2 | 11.3 | 3.00 | 0.19 | 3.2 | 0.75 | 0.96 | 17.4 | DKICK | riffle | 3 | 11.1 | 3.00 | 0.19 | 4.0 | 0.80 | 0.96 | 17.4 | DKICK | riffle | 4 | 11.3 | 3.00 | 0.19 | 2.6 | 0.70 | 0.96 | 17.4 | SURBER | riffle | 5 | 0.09 | SURBER | riffle | 6 | 0.09 | SURBER | riffle | 7 | 0.09 |
| loc no | other | wood | silt clay | sand | fine gravel | coarse gravel | cobble | boulder | bedrock rough | bedrock smooth |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 4% | 16% | 24% | 50% | 6% | 2 | 18% | 18% | 24% | 34% | 6% | 3 | 20% | 42% | 24% | 14% | 4 | 4% | 10% | 12% | 62% | 12% |
|
RIVPACS (River InVertebrate Prediction and Classification System) is a model that predicts probabilities of aquatic invertebrates occurring in streams in Western Washington. The number of observed taxa (O) at a test site is divided by the expected taxa (E), yielding a ratio. A ratio of 1 indicates that all expected taxa are present. As a site becomes more degraded, fewer expected taxa are observed, yielding a smaller ratio. We are 90% confident that a ratio smaller than 0.86 is degraded relative to a reference condition. RIVPACS score for this visit: 0.32 |
| samp type | loc type | loc no | comment | EPT (%) | ephem (%) | chiron (%) |
|---|---|---|---|---|---|---|
| DKICK | riffle | 0 | numerically composited | 81% | 6% | 5% | SURBER | riffle | 0 | numerically composited | 90% | 6% | 6% | DKICK | riffle | 1 | replicate | 82% | 10% | 1% | DKICK | riffle | 2 | replicate | 80% | 3% | 8% | DKICK | riffle | 3 | replicate | 80% | 8% | 5% | DKICK | riffle | 4 | replicate | 79% | 3% | 4% | SURBER | riffle | 5 | replicate | 92% | 6% | 2% | SURBER | riffle | 6 | replicate | 93% | 5% | 5% | SURBER | riffle | 7 | replicate | 87% | 7% | 10% |
| samp type | loc type | loc no | comment | Trichop richness (count) | total richness (count) | Plecop richness (count) | EPT richness (count) | Ephem richness (count) |
|---|---|---|---|---|---|---|---|---|
| DKICK | riffle | 0 | numerically composited | 2 | 11 | 0% | 3 | 1 | SURBER | riffle | 0 | numerically composited | 1 | 7 | 0% | 2 | 1 | DKICK | riffle | 1 | replicate | 1 | 7 | 0% | 2 | 1 | DKICK | riffle | 2 | replicate | 1 | 10 | 0% | 2 | 1 | DKICK | riffle | 3 | replicate | 1 | 10 | 0% | 2 | 1 | DKICK | riffle | 4 | replicate | 2 | 10 | 0% | 3 | 1 | SURBER | riffle | 5 | replicate | 1 | 7 | 0% | 2 | 1 | SURBER | riffle | 6 | replicate | 1 | 7 | 0% | 2 | 1 | SURBER | riffle | 7 | replicate | 1 | 6 | 0% | 2 | 1 |
| samp type | loc type | loc no | comment | temp pref avg (score) | TV3 richness (count) | HBI (score) | BiTol richness (count) | tv7 (%) | top3 (%) | BiTol (%) |
|---|---|---|---|---|---|---|---|---|---|---|
| DKICK | riffle | 0 | numerically composited | 1 | 4 | 0% | 1% | 88% | 3% | SURBER | riffle | 0 | numerically composited | 0% | 4 | 0% | 0% | 95% | 3% | DKICK | riffle | 1 | replicate | 0% | 4 | 0% | 0% | 96% | 5% | DKICK | riffle | 2 | replicate | 0% | 4 | 0% | 1% | 89% | 2% | DKICK | riffle | 3 | replicate | 0% | 4 | 0% | 2% | 89% | 4% | DKICK | riffle | 4 | replicate | 1 | 4 | 0% | 2% | 91% | 1% | SURBER | riffle | 5 | replicate | 0% | 4 | 0% | 0% | 95% | 4% | SURBER | riffle | 6 | replicate | 0% | 4 | 0% | 0% | 98% | 3% | SURBER | riffle | 7 | replicate | 0% | 4 | 0% | 0% | 96% | 3% |
| samp type | loc type | loc no | comment | sv richness (count) | clinger richness (count) | scrapers (%) | predators (%) | filterers (%) | clingers (%) |
|---|---|---|---|---|---|---|---|---|---|
| DKICK | riffle | 0 | numerically composited | 1 | 5 | 0% | 1% | 82% | 83% | SURBER | riffle | 0 | numerically composited | 1 | 4 | 0% | 0% | 86% | 88% | DKICK | riffle | 1 | replicate | 0% | 3 | 0% | 0% | 86% | 86% | DKICK | riffle | 2 | replicate | 1 | 4 | 1% | 1% | 81% | 82% | DKICK | riffle | 3 | replicate | 0% | 3 | 0% | 1% | 75% | 77% | DKICK | riffle | 4 | replicate | 0% | 4 | 0% | 0% | 85% | 85% | SURBER | riffle | 5 | replicate | 1 | 4 | 1% | 0% | 89% | 91% | SURBER | riffle | 6 | replicate | 1 | 4 | 0% | 0% | 88% | 89% | SURBER | riffle | 7 | replicate | 0% | 3 | 0% | 0% | 82% | 83% |
| habitat type | location no. | sampler type | sample area (m^2) |
|---|---|---|---|
| riffle | 1 | DKICK | 0.19 |
taxon id taxon name density (m^2) % of total ------------------------------------------------------------------ 115453 Hydropsyche sp. 1915 72.5 126774 Simulium sp. 360 13.6 100817 B. tricaudatus 255 9.7 53964 Turbellaria 70 2.7 127917 Chironomidae 30 1.1 69290 Hirudinea 5 0.2 119660 Antocha monticola 5 0.2
| habitat type | location no. | sampler type | sample area (m^2) |
|---|---|---|---|
| riffle | 2 | DKICK | 0.19 |
taxon id taxon name density (m^2) % of total ------------------------------------------------------------------ 115453 Hydropsyche sp. 1422 76.0 127917 Chironomidae 148 7.9 53964 Turbellaria 100 5.3 126774 Simulium sp. 87 4.6 100817 B. tricaudatus 64 3.4 69290 Hirudinea 17 0.9 68422 Oligochaeta 10 0.5 119660 Antocha monticola 10 0.5 114177 Optioservus sp. 10 0.5 136327 Hemerodromia 4 0.2
| habitat type | location no. | sampler type | sample area (m^2) |
|---|---|---|---|
| riffle | 3 | DKICK | 0.19 |
taxon id taxon name density (m^2) % of total ------------------------------------------------------------------ 115453 Hydropsyche sp. 378 72.4 53964 Turbellaria 43 8.2 100817 B. tricaudatus 41 7.9 127917 Chironomidae 26 5.0 126774 Simulium sp. 15 2.9 119660 Antocha monticola 9 1.7 69290 Hirudinea 6 1.1 68422 Oligochaeta 2 0.4 82754 Acarina 1 0.2 136327 Hemerodromia 1 0.2
| habitat type | location no. | sampler type | sample area (m^2) |
|---|---|---|---|
| riffle | 4 | DKICK | 0.19 |
taxon id taxon name density (m^2) % of total ------------------------------------------------------------------ 115453 Hydropsyche sp. 1543 75.7 126774 Simulium sp. 187 9.2 53964 Turbellaria 113 5.5 127917 Chironomidae 89 4.4 100817 B. tricaudatus 57 2.8 68422 Oligochaeta 29 1.4 119660 Antocha monticola 7 0.3 76483 Lymnaeidae 4 0.2 69290 Hirudinea 4 0.2 117159 Glossosoma sp. 4 0.2
| habitat type | location no. | sampler type | sample area (m^2) |
|---|---|---|---|
| riffle | 5 | SURBER | 0.09 |
taxon id taxon name density (m^2) % of total ------------------------------------------------------------------ 115453 Hydropsyche sp. 948 86.0 100817 B. tricaudatus 70 6.4 126774 Simulium sp. 34 3.1 127917 Chironomidae 24 2.2 119660 Antocha monticola 12 1.1 114177 Optioservus sp. 12 1.1 82754 Acarina 2 0.2
| habitat type | location no. | sampler type | sample area (m^2) |
|---|---|---|---|
| riffle | 6 | SURBER | 0.09 |
taxon id taxon name density (m^2) % of total ------------------------------------------------------------------ 115453 Hydropsyche sp. 614 87.7 127917 Chironomidae 36 5.1 100817 B. tricaudatus 35 5.0 119660 Antocha monticola 7 1.0 69290 Hirudinea 3 0.4 126774 Simulium sp. 3 0.4 114177 Optioservus sp. 2 0.3
| habitat type | location no. | sampler type | sample area (m^2) |
|---|---|---|---|
| riffle | 7 | SURBER | 0.09 |
taxon id taxon name density (m^2) % of total ------------------------------------------------------------------ 115453 Hydropsyche sp. 431 80.1 127917 Chironomidae 53 9.9 100817 B. tricaudatus 35 6.5 126774 Simulium sp. 11 2.0 119660 Antocha monticola 6 1.1 69290 Hirudinea 2 0.4
| Download file containing all Ecology ambient stream biological monitoring data Microsoft Access version 2000 format in ZIP archive, ~2 megabyte download |
Questions or comments on content may be sent to George Onwumere
Questions or comments on presentation may be sent to Steve Barrett.
Washington State Department of Ecology