Modesto Effluent Storage dam
Modesto Effluent Storage
Modesto Effluent Storage, located in Stanislaus County, California, is a crucial water resource infrastructure managed by the local government. Completed in 1987, this offstream Earth dam stands at a height of 20 feet and has a storage capacity of 7830 acre-feet. Its primary purpose is to supply water for various uses including flood risk reduction and water supply in the San Joaquin River area.
The dam's significant hazard potential is mitigated by regular inspections, with its condition assessed as satisfactory as of September 2017. The structure's inspection frequency is once per year, ensuring its safety and reliability for the surrounding community. Owned and regulated by the state of California, Modesto Effluent Storage plays a vital role in water management and infrastructure development in the region.
With a surface area of 596 acres and a drainage area that aids in flood risk reduction, this dam serves as a key component in the state's water resource management. Its location in the San Joaquin River area, along with its design and capacity, highlights the importance of sustainable water storage infrastructure in mitigating climate change impacts and ensuring water security for local communities.
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 Modesto Effluent Storage -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Del Puerto C Nr Patterson Ca | 0 cfs | → |
| Tuolumne R A Modesto Ca | 199 cfs | → |
| San Joaquin R Nr Crows Landing Ca | 442 cfs | → |
| Orestimba Cr At River Rd Nr Crows Landing Ca | 0 cfs | → |
| Stanislaus R A Ripon Ca | 1,330 cfs | → |
| San Joaquin R Nr Vernalis Ca | 1,830 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Modesto Effluent Storage.
Campgrounds
- Caswell Memorial State Park
- George Hatfield State Rec Area
- Frank Raines Regional Park
- Turtle Beach Rv Park
- Mcconnell State Rec Area
- Dos Reis
Track Modesto Effluent Storage 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 Modesto Effluent Storage
Where does the data for Modesto Effluent Storage 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 Significant 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 Modesto Effluent Storage.