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Watershed & Wallet-friendly Roads

Learn about the influences roads can have on hydrology and water quality in rural watersheds.In rural watersheds, roads are one of the most significant and easily controlled sources of modification to the stream systems. Road systems can have three major impacts on...

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Stormdrain Outflow

At the request of the Napa Countywide Stormwater Pollution Prevention Program (NCSPPP), Napa County Resource Conservation District (RCD) conducted a countywide dry-weather assessment of municipal storm drain outfalls to assist in compliance with waste discharge...

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Gravel Permeability

The RCD measures gravel permeability to determine how suitable streambed gravels are for salmonid egg incubation and larval (alevin) development. This is based on the fact that salmonid egg and alevin survival is correlated with the amount of flow through the gravels...

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Steelhead Trout

Importance Steelhead trout are an important component of California´s diverse wildlife heritage. They are a good indicator of the health of aquatic systems because they use all portions of a river system, and require cool, clean water.  Steelhead are a sport fish,...

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Napa River Fishes

The Napa River watershed provides a range of habitat types for fish--from the steep, cold, fast-moving waters in the mountain streams, to the flat, warm, salty and tidal waters of the esturary. Twelve native fish species can be found in the upper, nontidal portion of...

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DIY at the Ecological Reserve

The Napa River Ecological Reserve Curriculum Guide was created to encourage the use of the Napa River Ecological Reserve as a learning laboratory for students of all ages. The 73-acre Reserve is the last sizable section of riparian vegetation in the Napa Valley and...

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