Are BIBI Scores Improving in Newaukum & Soos Tributaries? - - PowerPoint PPT Presentation

Are BIBI Scores Improving in Newaukum & Soos Tributaries?

Presenter: Katherine Lynch, SPU

All-3(Tier2) Protecting and improving access to tributaries will increase the quantity of available habitat, particularly for juvenile Chinook and coho salmon, and lead to expanded salmon spatial distribution, greater juvenile growth and higher survival

Newaukum Creek BIBI Sample Stations

8 yrs data = 3 yrs pre-plan, 5 yrs post-plan

BIBI Station Mainstem

Newaukum Creek BIBI Results

Yes - Slight improvement from Poor to Fair in Ravine (lower Newaukum Ck) after implementing WRIA 9 Habitat Plan in 2005

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Newaukum Ck Land Use

Higher Density Residential Areas

Riparian Conditions Land Cover

Newaukum Creek Replanted Areas

Replanted areas

Soos Creek BIBI Sample Stations

8 yrs data = 3 yrs pre-plan, 5 yrs post-plan

BIBI Station Chinook buffer BIBI Station Mainstem

Soos Creek BIBI Results

29 36 35 29 38 38 25 10 15 20 25 30 35 40 45 50 1 2 3 4 BIBI Score Site Order (Downstream to Upstream) Pre-Plan Post-Plan

Fair 28-36 Good 38-44 Poor 18-26

No significant change in overall BIBI scores after implementing the WRIA 9 Habitat Plan in 2005

Soos Creek WS Land Use

Riparian Conditions Cities

Covington Maple Valley Black Diamond Auburn Kent Renton

Conclusions

1. Both basins have fair to good BIBI scores, both tend to have higher scores upstream 2. The scores in both have been quite stable over last 8 years, with a slight improvement in lower Newaukum (ravine) 3. Land use suggests different strategies for each WS: Soos - residential programs – backyard projects versus Newaukum - work with agriculture doing more field/pasture restoration