Petes Valley dam
Petes Valley
Petes Valley, located in Lassen, California, is home to a significant water management structure known as Petes Creek. This privately owned dam was completed in 1954 and serves primarily for water supply purposes, including irrigation. With a height of 29 feet and a storage capacity of 240 acre-feet, Petes Valley Dam plays a crucial role in maintaining water resources for the surrounding area.
Managed by the California Department of Water Resources, Petes Valley Dam has a history of regular inspections and a satisfactory condition assessment, indicating its reliability in water management. Despite its low hazard potential, the dam is equipped with necessary safety and regulatory measures to ensure its structural integrity and the safety of downstream communities. As a key component in the water supply infrastructure of Belfast, Petes Valley serves as a vital resource for the region's agricultural and domestic water needs.
With a drainage area of 12.44 square miles and a maximum discharge capacity of 6,355 cubic feet per second, Petes Valley Dam plays a crucial role in regulating water flow and storage in the area. The dam's location in the picturesque Petes Valley provides a scenic backdrop to its functional importance in water resource management and climate resilience efforts. For water resource and climate enthusiasts, Petes Valley represents a harmonious blend of nature's beauty and human ingenuity in sustaining vital water supplies for the community.
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 Petes Valley -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Spanish C Ab Blackhawk C At Keddie Ca | 116 cfs | → |
| Sf Pit R Nr Likely Ca | 124 cfs | → |
| Spanish C A Quincy Ca | 54 cfs | → |
| Hat C Nr Hat Creek Ca | 166 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Petes Valley.
Campgrounds
- Biscar Reservoir Dispersed
- Ramhorn Springs
- Eagle
- West Eagle Campground
- Eagle Campground
- Rocky Point Dispersed - Eagle Lake
Fishing spots
Track Petes Valley 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 Petes Valley
Where does the data for Petes Valley 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 Petes Valley.