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Puget Sound Stream Benthos

Analysis: Benthic Index of Biotic Integrity

Area Project Location or Keyword
Aggregation Score Type Metric
Replicate Handling Taxonomic Resolution/STE (See lists) Taxa at Visit Metrics
Taxa Attributes (See lists) Taxa Mapping Taxa at Visit Filter
Number of Organisms Year
Min: Max: Range from through

RowSite Code,
Location
Year,
Project
QuantitiesScoresView
Samples
Taxa RichnessEphemeroptera RichnessPlecoptera RichnessTrichoptera RichnessEPT RichnessClinger RichnessLong-Lived RichnessIntolerant RichnessPercent DominantPredator PercentTolerant PercentNumber of OrganismsOverall ScoreTaxa RichnessEphemeroptera RichnessPlecoptera RichnessTrichoptera RichnessClinger RichnessLong-Lived RichnessIntolerant RichnessPercent DominantPredator PercentTolerant Percent
109BLA07...Site Code: 09BLA0722Garrison Creek - S ForkBlack River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...7/29/2025
Ambient Monitoring
King County - DNRP
34233892055.6%4.6%13.2%50022.72.41.42.92.51.20.00.03.61.86.9Details
209BLA06...Site Code: 09BLA0675Mill Creek (Kent)Black River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/21/2025
Ambient Monitoring
King County - DNRP
282428106068.5%2.0%8.6%49922.70.31.44.31.21.85.00.00.10.58.0Details
309BLA07...Site Code: 09BLA0716Mill Creek (Kent)Black River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...10/14/2025
Ambient Monitoring
King County - DNRP
314331094072.0%1.2%27.2%50018.51.44.32.92.51.22.50.00.00.13.7Details
409BLA07...Site Code: 09BLA0756Mill Creek (Kent)Black River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/21/2025
Ambient Monitoring
King County - DNRP
3425411114069.3%4.2%8.4%49927.82.41.45.73.82.42.50.00.01.68.0Details
509BLA07...Site Code: 09BLA0771Panther Creek (Black River)Black River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...7/31/2025
Ambient Monitoring
King County - DNRP
4333511116040.6%17.2%20.8%50044.55.52.92.95.02.45.00.07.78.15.2Details
609BLA07...Site Code: 09BLA0772Panther Creek (Black River)Black River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/21/2025
Ambient Monitoring
King County - DNRP
4352512156048.2%2.4%16.6%50039.85.55.71.45.04.75.00.05.60.76.1Details
709BLA07...Site Code: 09BLA0768Springbrook Creek (Black River)Black River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/21/2025
Ambient Monitoring
King County - DNRP
3215713125156.8%14.8%29.4%50036.41.70.05.77.52.93.81.43.36.93.2Details
809BLA08...Site Code: 09BLA0817Springbrook Creek tributary (0006B)Black River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...7/29/2025
Ambient Monitoring
King County - DNRP
14110231082.2%0.6%59.8%5000.00.00.00.00.00.00.00.00.00.00.0Details
909DEE22...Site Code: 09DEE2208Coal Creek (Green River)Coal Creek (Green) SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/4/2025
Ambient Monitoring
King County - DNRP
5789926279922.4%14.0%2.2%50094.710.010.010.010.010.08.810.010.06.59.5Details
1009DEE22...Site Code: 09DEE2294Coal Creek (Green River)Coal Creek (Green) SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/4/2025
Ambient Monitoring
King County - DNRP
59109827258935.2%12.0%0.4%50090.810.010.010.08.810.07.510.09.15.59.9Details
1109COV_b...Site Code: 09COV_bug1Covington CreekCovington Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Integr...8/18/2025
Integrated Streams Program
King County - DNRP
5967821237231.4%9.8%14.4%50074.010.07.18.68.89.46.22.910.04.46.7Details
1209COV11...Site Code: 09COV1165Covington CreekCovington Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/18/2025
Ambient Monitoring
King County - DNRP
51786212511851.8%10.8%1.0%50082.48.38.610.06.210.010.010.04.64.99.8Details
1309COV14...Site Code: 09COV1418Covington CreekCovington Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/18/2025
Ambient Monitoring
King County - DNRP
60771024288624.4%11.8%2.2%50088.110.08.68.610.010.07.58.610.05.49.5Details
1409COV17...Site Code: 09COV1756Covington CreekCovington Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...10/2/2025
Ambient Monitoring
King County - DNRP
43378182011462.2%9.0%1.0%50064.75.52.98.68.87.610.05.71.84.09.8Details
15EFF755X...Site Code: EFF755XX-CO01.5Covington CreekCovington Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2023, TMD...9/19/2023
TMDL Biological Monitoring of Soos Creek watershed
Washington State Department of Ecology
66108725264633.0%3.2%2.6%50078.810.010.010.07.510.02.58.69.71.19.4Details
16EFF755X...Site Code: EFF755XX-CO02.2Covington CreekCovington Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2023, TMD...9/27/2023
TMDL Biological Monitoring of Soos Creek watershed
Washington State Department of Ecology
7961012282911427.0%9.8%2.4%50086.710.07.110.010.010.010.05.710.04.49.4Details
17EFF755X...Site Code: EFF755XX-CO03.6Covington CreekCovington Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2023, TMD...9/21/2023
TMDL Biological Monitoring of Soos Creek watershed
Washington State Department of Ecology
80768212811321.4%7.8%9.2%50080.010.08.67.18.810.010.04.310.03.47.9Details
1809COV18...Site Code: 09COV1862Rock Creek tributary (Covington)Covington Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...7/22/2025
Ambient Monitoring
King County - DNRP
4437515178238.8%18.8%1.0%50065.45.92.98.65.05.97.52.98.28.99.8Details
1909COV18...Site Code: 09COV1864Rock Creek tributary (Covington)Covington Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...7/22/2025
Ambient Monitoring
King County - DNRP
4136514147161.4%15.6%34.6%50042.94.82.97.15.04.16.21.42.17.32.0Details
2009DEE21...Site Code: 09DEE2163Deep Creek (Green River)Deep Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/4/2025
Ambient Monitoring
King County - DNRP
4465415198242.6%6.6%5.0%50058.75.97.15.73.87.17.52.97.12.88.8Details
2109DEE22...Site Code: 09DEE2211Deep Creek (Green River)Deep Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/4/2025
Ambient Monitoring
King County - DNRP
5134613197343.4%10.2%28.6%50054.18.32.94.36.27.16.24.36.94.63.3Details
2209DUW00...Site Code: 09DUW0091Duwamish River tributary (0001E)Duwamish River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...7/29/2025
Ambient Monitoring
King County - DNRP
26120342064.6%3.2%44.2%5003.70.00.01.40.00.00.00.01.21.10.0Details
2309DUW02...Site Code: 09DUW0225Duwamish River tributary (0003)Duwamish River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...7/29/2025
Ambient Monitoring
King County - DNRP
20131535066.8%3.4%52.4%5008.40.00.02.90.00.03.80.00.61.20.0Details
2409JEN_b...Site Code: 09JEN_bug1Jenkins CreekJenkins Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Integr...10/9/2025
Integrated Streams Program
King County - DNRP
3778823209562.0%3.6%3.6%50066.73.48.610.08.87.68.87.11.91.39.2Details
2509JEN13...Site Code: 09JEN1318Jenkins CreekJenkins Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/12/2025
Ambient Monitoring
King County - DNRP
5259923218339.8%11.8%7.6%50075.98.65.710.010.08.27.54.37.95.48.2Details
2609JEN13...Site Code: 09JEN1357Jenkins CreekJenkins Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/12/2025
Ambient Monitoring
King County - DNRP
48711523179544.0%10.4%17.0%50070.17.28.610.05.05.98.87.16.84.76.0Details
27EFF755X...Site Code: EFF755XX-JE02.6Jenkins CreekJenkins Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2023, TMD...9/19/2023
TMDL Biological Monitoring of Soos Creek watershed
Washington State Department of Ecology
5643310138132.0%17.6%11.0%50057.810.04.32.92.53.57.51.410.08.37.4Details
28LF04, Lon...Site Code: LF04Longfellow CreekLongfellow Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Statu...8/12/2025
Status & Trends
City of Seattle
11100121087.0%0.0%27.0%5003.70.00.00.00.00.00.00.00.00.03.7Details
29LFMA095...Site Code: LFMA0954Longfellow CreekLongfellow Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2024, Statu...8/5/2024
Status & Trends
City of Seattle
19000032070.2%1.6%38.8%5001.30.00.00.00.00.00.00.00.00.31.0Details
30LFMA255...Site Code: LFMA2559Longfellow CreekLongfellow Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2024, Statu...8/5/2024
Status & Trends
City of Seattle
16121433087.6%0.6%78.2%5002.70.00.01.40.00.01.20.00.00.00.0Details
31LFMA339...Site Code: LFMA3396Longfellow CreekLongfellow Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2024, Statu...8/5/2024
Status & Trends
City of Seattle
19121443076.4%2.0%59.2%5003.20.00.01.40.00.01.20.00.00.50.0Details
32LFMA349...Site Code: LFMA3490Longfellow CreekLongfellow Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2024, Statu...8/5/2024
Status & Trends
City of Seattle
14123651089.4%0.4%79.4%5003.90.00.01.42.50.00.00.00.00.00.0Details
33PU01, Pu...Site Code: PU01Puget CreekLongfellow Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2024, Statu...8/6/2024
Status & Trends
City of Seattle
23112432071.9%3.0%48.1%4992.20.00.00.01.20.00.00.00.01.00.0Details
3409LOW07...Site Code: 09LOW0753Green River - Lower tributary (S 277th St.)Lower Green River - E SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2023, Ambi...8/15/2023
Ambient Monitoring
King County - DNRP
24000027052.3%6.5%19.4%15519.00.00.00.00.00.06.20.04.52.85.5Details
3509LOW07...Site Code: 09LOW0751Olson CreekLower Green River - E SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...9/17/2025
Ambient Monitoring
King County - DNRP
4456314126337.0%10.4%0.4%50056.75.95.77.12.52.95.04.38.64.79.9Details
3609LOW03...Site Code: 09LOW0325Lower Green River tributary (0036B)Lower Green River - W SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...10/14/2025
Ambient Monitoring
King County - DNRP
32321667062.0%3.6%21.7%49820.41.72.91.40.00.06.20.01.91.35.0Details
3709MID174...Site Code: 09MID1744Cristy CreekMiddle Green River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/18/2025
Ambient Monitoring
King County - DNRP
5458518178348.0%15.8%2.4%50070.29.35.710.05.05.97.54.35.77.49.4Details
3809MID181...Site Code: 09MID1817Cristy CreekMiddle Green River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/18/2025
Ambient Monitoring
King County - DNRP
5326513124136.0%17.2%4.4%50055.49.01.47.15.02.92.51.48.98.19.0Details
3909MID242...Site Code: 09MID2426Green River - Middle tributaryMiddle Green River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/21/2025
Ambient Monitoring
King County - DNRP
43593171210443.8%6.6%0.2%50062.05.55.710.02.52.910.05.76.82.810.0Details
4009MID195...Site Code: 09MID1958Icy CreekMiddle Green River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...7/31/2025
Ambient Monitoring
King County - DNRP
4369419158556.8%2.8%23.4%50054.55.57.110.03.84.77.57.13.30.94.6Details
4109MID137...Site Code: 09MID1374O'Grady CreekMiddle Green River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/18/2025
Ambient Monitoring
King County - DNRP
54578201911444.4%42.4%2.8%50081.19.35.78.68.87.110.05.76.610.09.3Details
4209MIL034...Site Code: 09MIL0340Mill Creek (Auburn)Mill Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...9/24/2025
Ambient Monitoring
King County - DNRP
4645716165163.2%5.4%46.8%50038.36.64.35.77.55.33.81.41.62.20.0Details
4309MIL039...Site Code: 09MIL0390Mill Creek (Auburn)Mill Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...9/24/2025
Ambient Monitoring
King County - DNRP
4276417153343.8%5.4%3.8%50053.05.28.67.13.84.71.24.36.82.29.1Details
4409NEW16...Site Code: 09NEW1657Newaukum CreekNewaukum Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/21/2025
Ambient Monitoring
King County - DNRP
5997723288432.8%11.0%12.8%50081.110.010.08.67.510.07.55.79.85.07.0Details
4509NEW21...Site Code: 09NEW2102Newaukum CreekNewaukum Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/26/2025
Ambient Monitoring
King County - DNRP
5395519178745.2%9.6%5.6%50072.59.010.05.75.05.97.510.06.44.38.7Details
4609NEW20...Site Code: 09NEW2076Newaukum Creek - N ForkNewaukum Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...9/11/2025
Ambient Monitoring
King County - DNRP
4086418227442.8%20.4%2.6%50072.34.510.07.13.88.86.25.77.19.79.4Details
4709NEW21...Site Code: 09NEW2128Newaukum Creek - N ForkNewaukum Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...9/11/2025
Ambient Monitoring
King County - DNRP
4766618219328.6%8.2%1.2%50072.06.97.17.16.28.28.84.310.03.69.7Details
4809SOO_b...Site Code: 09SOO_bug1Big Soos CreekSoos Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Integr...8/13/2025
Integrated Streams Program
King County - DNRP
4458619259455.6%7.6%6.0%50067.85.95.710.06.210.08.85.73.63.38.6Details
4909SOO09...Site Code: 09SOO0943Big Soos CreekSoos Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/13/2025
Ambient Monitoring
King County - DNRP
4669419206360.8%7.8%2.6%50059.46.67.110.03.87.65.04.32.23.49.4Details
50EFF755X...Site Code: EFF755XX-BS00.7Big Soos CreekSoos Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2023, TMD...9/20/2023
TMDL Biological Monitoring of Soos Creek watershed
Washington State Department of Ecology
4559519187351.0%12.2%1.6%50064.06.25.710.05.06.56.24.34.95.69.6Details
51EFF755X...Site Code: EFF755XX-BS04.7Big Soos CreekSoos Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2023, TMD...9/25/2023
TMDL Biological Monitoring of Soos Creek watershed
Washington State Department of Ecology
4676720239655.0%3.8%6.8%50070.16.68.67.17.59.48.88.63.81.48.4Details
5209SOO12...Site Code: 09SOO1209Little Soos CreekSoos Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...9/18/2025
Ambient Monitoring
King County - DNRP
4477519209646.2%4.0%15.4%50067.15.98.68.65.07.68.88.66.21.56.4Details
5309SOO12...Site Code: 09SOO1283Little Soos CreekSoos Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/12/2025
Ambient Monitoring
King County - DNRP
4176518176453.3%11.3%4.0%49760.64.88.67.15.05.95.05.74.25.29.1Details
54EFF755X...Site Code: EFF755XX-LS00.3Little Soos CreekSoos Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2023, TMD...9/20/2023
TMDL Biological Monitoring of Soos Creek watershed
Washington State Department of Ecology
4476417189441.6%7.2%10.6%50064.35.98.67.13.86.58.85.77.43.17.5Details
55EFF755X...Site Code: EFF755XX-MV00.2Meridian Valley CreekSoos Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2023, TMD...7/6/2023
TMDL Biological Monitoring of Soos Creek watershed
Washington State Department of Ecology
40101285052.6%9.4%38.8%50018.44.50.00.00.00.63.80.04.44.21.0Details
5609SOO11...Site Code: 09SOO1130Soos CreekSoos Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/26/2025
Ambient Monitoring
King County - DNRP
4157921277744.0%12.2%5.8%50076.44.85.78.610.010.06.210.06.85.68.7Details
5709SOO11...Site Code: 09SOO1134Soos CreekSoos Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/13/2025
Ambient Monitoring
King County - DNRP
46589222510856.2%5.4%37.2%50069.36.65.710.010.010.010.010.03.52.21.3Details
5809SOO10...Site Code: 09SOO1022Soosette CreekSoos Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2025, Ambi...8/18/2025
Ambient Monitoring
King County - DNRP
51108624238636.4%39.0%2.4%50088.38.310.010.06.29.47.58.68.810.09.4Details
59EFF755X...Site Code: EFF755XX-SO01.3Soosette CreekSoos Creek SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2023, TMD...9/18/2023
TMDL Biological Monitoring of Soos Creek watershed
Washington State Department of Ecology
4163817165252.2%43.6%0.6%50059.94.87.12.98.85.33.82.94.510.09.9Details
60BIO06600...Site Code: BIO06600-SUND04Sunday CreekUpper Green River SubbasinDuwamish - Green River BasinWRIA 9 - Duwamish-Green2023, Ambi...8/7/2023
Ambient Freshwater Biological Monitoring Program
Washington State Department of Ecology
49897242191035.6%31.0%0.3%32391.07.610.010.07.58.28.810.09.010.09.9Details
60 scores generated from 2745 sample taxa on Wednesday, March 11, 2026 1:14:16 PM. (0.11 seconds)
LegendExcellentExcellent/GoodGoodGood/FairFairFair/PoorPoorPoor/Very PoorVery Poor