Milliken dam
Milliken
Located in Napa, California, Milliken Reservoir, also known as Milliken, is a stunning arch dam built in 1924 primarily for water supply purposes. With a height of 110 feet and a length of 647 feet, this reservoir boasts a storage capacity of 1980 acre-feet and covers a surface area of 44 acres. The dam stands tall on the Milliken Creek, showcasing its crucial role in water resource management in the region.
Managed by the local government and regulated by the Department of Water Resources and Safety of Dams, Milliken Reservoir is a vital component of the water infrastructure in California. Despite its age, the dam has been deemed to be in satisfactory condition, with a high hazard potential. Regular inspections ensure its safety and the implementation of risk management measures to mitigate any potential threats. With its picturesque location and impressive engineering, Milliken Reservoir continues to play a significant role in providing water supply to the surrounding areas.
As climate change impacts water resources, the importance of maintaining and monitoring dams like Milliken becomes increasingly crucial. With its historical significance and functional importance, Milliken Reservoir stands as a testament to the ingenuity of early water management systems in California. As water resource and climate enthusiasts explore the intersection of infrastructure and environmental stewardship, Milliken Reservoir remains a site of interest and admiration for its role in sustaining vital water supplies in the region.
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 Milliken -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Napa R Nr Napa Ca | 27 cfs | → |
| Putah C Nr Winters Ca | 548 cfs | → |
| Napa R Nr St Helena Ca | 8 cfs | → |
| Nathanson C A Sonoma Ca | 0 cfs | → |
| Sonoma C A Agua Caliente Ca | 10 cfs | → |
| Sonoma Creek A Kenwood Ca | 2 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Milliken.
Boat launches
- Napa Valley Vine Trail, Napa
- Knoxville Road 1601, Napa County
- Cuttings Wharf Road 3175-3337, Napa
- Cuttings Wharf Road 3270, Napa
- North Camino Alto Vallejo
- Chaparral Cove Napa County
Campgrounds
- Napa Valley Expo
- Skyline Wilderness County Park
- Steele Canyon Camp Site
- Lupine Shores - Lake Berryessa - Usbr
- Lupine Shores Camp Site
- Foothill Pines - Lake Berryessa - Usbr
Fishing spots
- Berryessa Lake
- Lake Berryessa
- 9th Street Boat Ramp
- City Of Benicia Fishing Pier
- Lake Ralphine
- San Pablo Reservoir
Paddle runs
- Cache Creek
- 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.
- Headwaters To Mouth
- Olema Ranch Campground To Caltrans Corporation Yard At Point Reyes Station
More reservoirs
Track Milliken 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 Milliken
Where does the data for Milliken 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 High 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 Milliken.