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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
108WES06...Site Code: 08WES0629Maple Leaf CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2024, Ambi...9/17/2024
Ambient Monitoring
King County - DNRP		25112464074.2%2.2%45.0%5004.30.00.00.01.20.02.50.00.00.60.0Details
295T, Thor...Site Code: 95TThornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2023, Proje...8/30/2023
Project Evaluation
City of Seattle		13201363096.6%0.0%1.6%50012.30.01.40.00.00.01.20.00.00.09.6Details
3KNKC, Th...Site Code: KNKCThornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2024, Proje...8/1/2024
Project Evaluation
City of Seattle		25123684076.6%1.2%64.6%5007.10.00.01.42.50.62.50.00.00.10.0Details
4KNKT_D, ...Site Code: KNKT_DThornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2024, Proje...8/1/2024
Project Evaluation
City of Seattle		26123664078.8%1.6%72.0%5006.70.00.01.42.50.02.50.00.00.30.0Details
5KNKT_U, ...Site Code: KNKT_UThornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2024, Proje...8/1/2024
Project Evaluation
City of Seattle		21123653074.4%1.0%65.4%5005.20.00.01.42.50.01.20.00.00.00.0Details
6KNKT-U, ...Site Code: KNKT-UThornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2022, Statu...8/30/2022
Status & Trends
City of Seattle		22113574069.4%1.2%48.2%5005.10.00.00.02.50.02.50.00.00.10.0Details
7LCPFP_1, ...Site Code: LCPFP_1Thornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2023, Proje...10/3/2023
Project Evaluation
City of Seattle		19112464070.2%1.2%49.4%5003.90.00.00.01.20.02.50.00.00.10.0Details
8LCPFP_2, ...Site Code: LCPFP_2Thornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2024, Proje...9/3/2024
Project Evaluation
City of Seattle		281269115077.6%2.0%71.6%50014.60.30.01.46.22.43.80.00.00.50.0Details
9NFCC, Th...Site Code: NFCCThornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2024, Proje...9/3/2024
Project Evaluation
City of Seattle		27113595049.2%3.2%44.8%50013.90.00.00.02.51.23.80.05.41.10.0Details
10NFCT, Th...Site Code: NFCTThornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2023, Proje...8/28/2023
Project Evaluation
City of Seattle		351258139049.4%10.0%48.8%50031.32.80.01.45.03.58.80.05.34.50.0Details
11SFCC, Th...Site Code: SFCCThornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2024, Proje...8/1/2024
Project Evaluation
City of Seattle		281258104075.8%0.8%62.6%50011.00.30.01.45.01.82.50.00.00.00.0Details
12SFCT, Th...Site Code: SFCTThornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2024, Proje...8/1/2024
Project Evaluation
City of Seattle		25113594069.6%6.0%31.8%50011.30.00.00.02.51.22.50.00.02.52.6Details
13TCA001, ...Site Code: TCA001Thornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2024, Sno-...9/16/2024
Sno-King Watershed Council benthic macroinvertebrate analysis of urban & suburban streams in King and Snohomish Counties
Sno-King Watershed Council		20112485066.0%1.2%29.0%5009.80.00.00.01.20.63.80.00.80.13.3Details
14TMMA119...Site Code: TMMA1199Thornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2023, Statu...8/16/2023
Status & Trends
City of Seattle		281247106070.2%3.2%42.2%50013.60.30.01.43.81.85.00.00.01.10.2Details
15TMMA316...Site Code: TMMA3168Thornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2024, Statu...9/3/2024
Status & Trends
City of Seattle		14101243096.0%0.0%2.2%50010.70.00.00.00.00.01.20.00.00.09.5Details
16TMMA875...Site Code: TMMA8751Thornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2023, Statu...10/3/2023
Status & Trends
City of Seattle		331034118063.6%1.8%62.8%50016.32.10.00.02.52.47.50.01.50.40.0Details
17TNMA060...Site Code: TNMA0609Thornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2023, Statu...8/16/2023
Status & Trends
City of Seattle		22114693074.0%0.4%59.2%5006.20.00.00.03.81.21.20.00.00.00.0Details
18TNMA767...Site Code: TNMA7673Thornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2023, Statu...8/21/2023
Status & Trends
City of Seattle		18122543073.4%6.0%78.8%5006.40.00.01.41.20.01.20.00.02.50.0Details
19TSMA661...Site Code: TSMA6612Thornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2021, Statu...8/10/2021
Status & Trends
City of Seattle		20103463076.8%0.8%61.8%5003.80.00.00.02.50.01.20.00.00.00.0Details
20TSMA777...Site Code: TSMA7774Thornton CreekThornton Creek SubbasinCedar River / Lake Washington BasinWRIA 8 - Cedar-Sammamish2023, Statu...8/21/2023
Status & Trends
City of Seattle		251247104048.4%0.6%21.4%50020.00.00.01.43.81.82.50.05.60.05.0Details
20 scores generated from 480 sample taxa on Friday, July 11, 2025 12:24:05 PM. (0.03 seconds)
LegendExcellentExcellent/Good–GoodGood/Fair–FairFair/Poor–PoorPoor/Very Poor–Very Poor