Issues that likely affect or potentially affect coho population and status:

Southern Subbasin:
Includes Little Lake, the city of Willits and the headwaters. Upper Outlet/Little Lake, Mill, Willits, Broaddus, Baechtel, Upp, and Haehl creeks have or have had a coho presence.

Summer and fall flows are restricted by six dams on Boy Scout/Rowe, Davis, and Willits creeks. Low or no flow conditions are eliminating summer rearing and spawning habitat. Local residents state that no bypass flow is released;

Summer water temperatures exceed suitable ranges in some tributaries;

Water quality may be affected by nutrients and bacteria from livestock and sewage and other inorganic pollutants;

Stream bank erosion caused by down cutting from dams, livestock and absence or sparse riparian is common;

Sediment from poorly maintained roads and culverts are affecting instream habitat;

Canopy cover is deficient on Davis and Conklin creeks and in other tributaries;

Natural and man-made barriers decrease available spawning habitat in several tributaries;

Fine sediment is still being transported downstream from the 1955 and 1964 floods and impacts the lower reach of Outlet Creek, which can be observed by widened floodplains, absent riparian and elongated sediment bars.

Stream routing and channelization for city and farm roads and railroad, farming, ranching, and subdivisions have significantly changed the fluvial continuity of the lower reaches of the tributaries.


What watershed and habitat improvement activities would most likely lead toward more desirable conditions in a timely, cost effective manner?

Recommendations  Activities Baechtel  Berry  Broaddus Davis
Mill  Willits 
Flow and Water Quality Enforce bypass flows during the summer and early fall to support juvenile salmonid survival.        X    X
  Enforce bypass flows during the late fall and early winter to support the salmonid spawning run.        X    X
  Identify and control unregulated water diversions and pumping.  X  X  X    X  
  Reduce summer and fall water temperatures.  X  X  X  X  X  X
  Reduce identified organic and inorganic pollutants to streams.  X  X  X  X  X  X
  Conserve water during the summer and fall months.  X  X  X  X  X  X
Erosion and Fine Sediment Reduce bank erosion.  X  X  X  X  X  X
  Reduce fine sediment input from roads, culverts, and other land use activities.  X  X  X  X  X  X
  Reduce sediment input from debris slides where possible.    X  X      
  Use exclusion fencing where streambank erosion is caused by grazing wildlife and livestock.  X  X  X  X    
Riparian and Instream Habitat Re-vegetate stream banks to develop and expand canopy.  X    X  X    X
  Add large woody debris and other structure to increase cover and pool depth and frequency.  X  X  X  X  X  X
  Replenish or continue efforts toward replenishing spawning gravels.        X    X
  Remove barriers to fish passage.  X  X  X X
Education, Research, and Monitoring Identify and map sediment sources.
 X  X  X  X  X  X
  Develop and support water quality monitoring.  X  X  X  X  X  X
  Continue stream flow gage monitoring.            X
  Continue and expand water quality (temperature, dissolved oxygen, and fine sediment) monitoring.  X  X  X  X  X  X
  Develop and support water conservation education within the City of Willits.        X    
  Continue efforts to develop watershed, landowner, and road association groups.  X  X  X  X