Napa River The Napa River was once famous for salmon and steelhead fishing, but the river has fallen into very poor health. Tributaries on the east side of the Napa Valley were dammed in the 1950s and 1960s for municipal water supplies, which cut off access to over one hundred miles of habitat and reduced summer base flows that supported rearing. Expansion of wineries and over-use of surface and groundwater has caused lower reaches of tributaries and the mainstem Napa River to go dry every summer or to become so stagnant that few viable habitats for salmon and steelhead rearing remain. For information on how to help save the Napa River see the Institute for Conservation, Advocacy, Research, and Education (ICARE) or learn more by reading comments on the Napa River TMDL report.

Napa River

The Napa River was once famous for salmon and steelhead fishing, but the river has fallen into very poor health. Tributaries on the east side of the Napa Valley were dammed in the 1950s and 1960s for municipal water supplies, which cut off access to over one hundred miles of habitat and reduced summer base flows that supported rearing. Expansion of wineries and over-use of surface and groundwater has caused lower reaches of tributaries and the mainstem Napa River to go dry every summer or to become so stagnant that few viable habitats for salmon and steelhead rearing remain. For information on how to help save the Napa River see the Institute for Conservation, Advocacy, Research, and Education (ICARE) or learn more by reading comments on the Napa River TMDL report.

Napa River in winter

Napa River Slideshow (pdf)

Napa River photos

Left, top to bottom
Napa River is a thin ribbon of riparian forest remaining from what once was a vast oak woodland, oak savannah, redwood conifer mixed vegetation supported a rich biodiversity that surpasses old growth forests

Migrating salmon. Fish need sufficient flows.

The Napa River with low flows. Garbage litters the dry streambed.

Hillside vineyards deep in the high watershed deplete fresh water flow sources by diverting from streams and pumping groundwater.

Right, top to bottom

Dams block migration and flows year around

Pumping water out of the river for irrigation

A dry Napa River at Sulphur Springs

ICARE Institute for Conservation, Advocacy and Research

Comments on Napa TMDL