Middle Cooperstown dam
Middle Cooperstown
Middle Cooperstown is a privately-owned earth dam located in Cooperstown, California, along the Tr Dry Creek. Built in 1947, this dam stands at a height of 24 feet and has a storage capacity of 90 acre-feet, primarily serving the purpose of water supply. Despite its low hazard potential and satisfactory condition assessment, Middle Cooperstown is regulated and inspected by the California Department of Water Resources for safety compliance.
Situated in Tuolumne County, Middle Cooperstown plays a crucial role in water resource management in the region, providing water supply for various uses. The dam's location in the San Francisco District and its proximity to the city of Cooperstown make it a significant infrastructure for maintaining water quality and quantity in the area. With a surface area of 17 acres and a hydraulic height of 19.9 feet, Middle Cooperstown contributes to maintaining the ecological balance of the surrounding area.
Water resource and climate enthusiasts would be intrigued by the operational and regulatory details of Middle Cooperstown, including its last inspection date in November 2019 and its compliance with state regulations for dam safety. The dam's association with the San Francisco District, along with its role in water supply management, highlights its importance in ensuring sustainable water resources for the community. Middle Cooperstown stands as a testament to responsible water infrastructure development and management in California's dynamic climate 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 Middle Cooperstown -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Modesto Cn Nr La Grange Ca | 834 cfs | → |
| Tuolumne R Bl Lagrange Dam Nr Lagrange Ca | 186 cfs | → |
| Turlock Cn Nr La Grange Ca | 912 cfs | → |
| Black C Nr Copperopolis Ca | 1 cfs | → |
| Big C Ab Whites Gulch Nr Groveland Ca | 1 cfs | → |
| Tuolumne R A Modesto Ca | 190 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Middle Cooperstown.
Boat launches
Campgrounds
- Blue Oaks - Don Pedro Rec Area
- Fleming Meadow - Don Pedro Rec Area
- Turlock Lake State Rec Area
- Modesto Reservoir
- South Lake Tulloch R.V. Campground & Marina
- Horseshoe Road Recreation Area & Campground
Fishing spots
Paddle runs
- Clavey River From Cottonwood Road To Confluence With Tuolumne
- Confluence With Middle Fork Tuolumne River To Confluence With Tuolumne River
- Confluence With North Fork And Middle Fork Stanislaus To Clark Flat
- Sandbar To Confluence With North Fork Stanislaus River
- Clavey River From 3n01 To Cottonwood Road
- Below Mckay's Reservoir To Confluence With Middle Fork Stanislaus River
Track Middle Cooperstown 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 Middle Cooperstown
Where does the data for Middle Cooperstown 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 Middle Cooperstown.