Terminal dam
Terminal
Terminal, also known as Terminal South Dike, is a Federal-owned structure located in Solano, California, designed for irrigation purposes along the Green Valley OS river. Built in 1958, this Earth-type dam stands at 24 feet tall with a hydraulic height of 21 feet and a structural height of 28 feet. Managed by the Bureau of Reclamation, Terminal has a low hazard potential and a high risk assessment level of 2.
Despite its relatively low hazard potential, Terminal plays a crucial role in providing irrigation water to the surrounding area. With a storage capacity of 119 acre-feet and a length of 500 feet, this dam ensures a stable water supply for agricultural activities. The Bureau of Reclamation oversees the operations, inspections, and regulatory aspects of Terminal, ensuring its continued functionality and safety for the community.
Terminal's last inspection date was in September 2020, with a scheduled inspection frequency of every 6 years. While the condition assessment is currently marked as "Not Available", the risk management measures and emergency preparedness protocols for the dam are yet to be fully detailed. As climate change continues to impact water resources, structures like Terminal will be vital in maintaining water security and resilience in the face of evolving environmental challenges.
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 Terminal -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Napa R Nr Napa Ca | 40 cfs | → |
| Nathanson C A Sonoma Ca | 0 cfs | → |
| Sonoma C A Agua Caliente Ca | 14 cfs | → |
| Putah C Nr Winters Ca | 402 cfs | → |
| Novato C A Novato Ca | 0 cfs | → |
| Napa R Nr St Helena Ca | 14 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Terminal.
Boat launches
- North Camino Alto Vallejo
- Napa Valley Vine Trail, Napa
- Cuttings Wharf Road 3175-3337, Napa
- Cuttings Wharf Road 3270, Napa
- Curtola Parkway 139-199, Vallejo
- Belden's Landing Boat Launch
Campgrounds
- Skyline Wilderness County Park
- Napa Valley Expo
- Rowser Garden Camping (No Reservation Needed)
- Browers Garden Camping - No Reservation Needed
- Travis Afb Military
- Wee-Ta-Chi
Fishing spots
- 9th Street Boat Ramp
- City Of Benicia Fishing Pier
- San Pablo Reservoir
- Lafayette Reservoir
- Contra Loma Reservoir
- Berryessa Lake
Paddle runs
- Headwaters To Mouth
- Headwaters To Ends One Quarter Mile South Of Bear Valley Road Bridge Segment 1: Ends 1/4 Mile South Of Bear Valley Road Bridge Segment 2: Caltrans Corporation Yard At Point Reyes Staton.
- Olema Ranch Campground To Caltrans Corporation Yard At Point Reyes Station
- Cache Creek
Track Terminal 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 Terminal
Where does the data for Terminal 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 Terminal.