Impacts from agriculture include streams polluted by agricultural return water or farm effluent; reduced flow due to diversions which can affect migratory patterns; and increased silt and pesticides in streams. Marijuana grow operations, legal and illegal, were considered in this metric.
Hatcheries
Hatcheries and releases of hatchery reared salmonids into the wild can negatively impact wild populations through competition, predation, disease, and loss of fitness and genetic diversity. Hatchery influences are especially apparent to for anadromous species where dams blocked access to spawning habitat and hatcheries were established as mitigation. Inland trout can also be impacted with stocking of hatchery fish for recreation.
Major Dams
Dams block access to historical spawning and rearing habitats. Downstream, dams alter the timing, frequency, duration, magnitude, and rate of change of flows decreasing habitat quality and survival. CalTrout’s Top 6 California Dams for Removal Klamath River Dams Eel River Dams Matilija Dam Rindge Dam Searsville Dam Battle Creek Dams
SOS overall score over time. Lower means greater extinction risk.
3.4
/ 7
2008
3.1
/ 7
2017
–
2027
Where to find California Golden Trout
California Golden trout are native to the South Fork Kern River and its tributaries, Golden Trout Creek and
Volcano Creek. As a result of extensive pack train collection and stocking efforts over the last century, they
can be found in nearby Cottonwood Lakes and Mulkey Creek, as well as several watersheds in the Sierra Nevada.
Expanded stocking has introduced them to more than 300 high mountain lakes and 1,100 km (about 680 mi.) of
streams outside their native range, including in Utah, Wyoming, and Montana.
South Fork Kern
Golden Trout Creek
Volcano Creek
Cottonwood Lakes
Mulkey Creek
300+
HIGH-MOUNTAIN
LAKES
1,100km
STREAMS OUTSIDE
NATIVE RANGE
8,000ft
MINIMUM NATIVE
ELEVATION
1
NATIVE WATERSHED
RANGE AND STOCKING HISTORY · NATIVE VS INTRODUCED
WATERS
Native habitat · Cottonwood Lakes Basin, Inyo National
Forest
California Golden trout exist only in
the streams and meadows of the high Sierra. Without sustained funding and policy attention, this State Fish
will be gone in our lifetimes.
The Field Notes
— every other Tuesday from CalTrout.
Watershed updates, project milestones, advocacy alerts, and the occasional photo from the field. No filler.
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