- Albion River
- Big River
- Eel River, North Fork
- Eel River, Upper Main
- Eel River, Middle Fork
- Eel River, South Fork
- Elk River
- Freshwater Creek
- Garcia River
- Gualala River
- Klamath River
- Laguna De Santa Rosa
- Lost River, Upper
- Lost River, Lower
- Mattole River
- Navarro River
- Noyo River
- Redwood Creek
- Russian River
- Salmon River
- Scott River
- Shasta River
- Stemple Creek
- Ten Mile River
- Trinity River
- Trinity River, South Fork
- Van Duzen River
Laguna de Santa Rosa Status
Federal Status
From 1990 to 1998, the Laguna de Santa Rosa watershed was listed on the Clean Water Act Section 303(d) List of Impaired Waterbodies due to impairment and/or threat of impairment to water quality by seasonal high ammonia and low dissolved oxygen levels caused by excessive nutrient loadings.
State Status
On March 1, 1995, the North Coast Regional Water Quality Control Board (Regional Water Board) promulgated the Waste Reduction Strategy for the Laguna de Santa Rosa. This Waste Reduction Strategy served as a phased TMDL for the Laguna de Santa Rosa and estimated seasonal waste loads, proposed a waste load reduction strategy, and proposed an implementation and monitoring plan.
Because of the development of the Waste Reduction Strategy, the Laguna de Santa Rosa watershed was removed from the 303(d) List of Impaired Waterbodies in 1998. Currently, the Waste Reduction Strategy is scheduled for review by the Regional Water Board's Planning Unit in an effort to adopt the Waste Reduction Strategy's seasonal waste loads and reduction strategy into the Basin Plan.
In the 2002 Section 303(d) List update, the Laguna was listed for impairments associated with nitrogen, phosphorus, and low dissolved oxygen. The new listings are based on monitoring data that indicate that water quality conditions in the Laguna are not in compliance with Basin Plan water quality objectives.