Jayne's Lake dam
Jayne's Lake
Jayne's Lake, located in Mendocino County, California, is a private dam that was completed in 1985 for flood risk reduction along Toney Creek. Standing at a height of 70 feet with a storage capacity of 1225 acre-feet, this earth dam plays a crucial role in irrigation and water supply for the surrounding area. Despite being regulated by the state and subject to regular inspections, Jayne's Lake is classified as having a low hazard potential and is in satisfactory condition as of the last assessment in September 2017.
Owned by a private entity, Jayne's Lake serves as a vital infrastructure for managing water resources in the region, with its primary purpose being flood risk reduction. The dam spans a length of 650 feet and covers a surface area of 55 acres while also providing essential irrigation and water supply functions. Situated in the city of Hearst, this dam is under the jurisdiction of the California Department of Water Resources and is inspected regularly to ensure its safety and compliance with state regulations.
Managed by the Sacramento District of the US Army Corps of Engineers, Jayne's Lake has not undergone significant modifications since its completion. With a designated emergency action plan yet to be prepared, the dam is deemed to have satisfactory risk management measures in place. As a key component in the water infrastructure of Mendocino County, Jayne's Lake stands as a testament to the importance of sustainable water resource management in the face of climate variability and changing environmental conditions.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Jayne's Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mf Eel R Nr Dos Rios Ca | 212 cfs | → |
| Outlet C Nr Willits Ca | 4 cfs | → |
| Willits C Ab Lk Emily Nr Willits Ca | 0 cfs | → |
| Elder C Nr Branscomb Ca | 4 cfs | → |
| Ef Russian R Nr Calpella Ca | 30 cfs | → |
| Ef Russian R Nr Ukiah Ca | 156 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Jayne's Lake.
Campgrounds
- Bear Flats
- Grizzly Flat Dispersed Camping
- Eel River Campground
- Eel River
- Sleepy Hollow Rv Park
- Creekside Cabins
Fishing spots
- Lake Pillsbury
- Cameron's Fishing Hole Catch & Release
- Lake Mendocino
- East Park Reservoir
- Black Rock Lake
- Black Butte Lake
Paddle runs
Track Jayne's Lake in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Jayne's Lake
Where does the data for Jayne's Lake come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Low hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Jayne's Lake.