Maxville dam
Maxville
Maxville, located in Pope Valley, California, is a privately owned dam with a primary purpose of water supply for irrigation and domestic use. Constructed in 1953, this earth dam stands at 37 feet tall and spans 330 feet in length, with a storage capacity of 183 acre-feet. Positioned on Maxwell Creek, the dam serves a drainage area of 0.71 square miles and covers a surface area of 15 acres.
Managed by the Department of Water Resources and regulated by the Safety of Dams program, Maxville's condition is assessed as satisfactory, with a significant hazard potential. The dam undergoes regular inspections, with the most recent conducted in March 2021, to ensure its structural integrity and safety. Despite its age, Maxville continues to play a vital role in water resource management and climate resilience efforts in the region.
With its strategic location and critical role in water supply, Maxville stands as a testament to the importance of sustainable water management practices in the face of changing climate patterns. As enthusiasts of water resources and climate adaptation, the unique characteristics and significance of Maxville offer a compelling case study for understanding the intersection of infrastructure, natural resources, and environmental stewardship in safeguarding our water future.
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 Maxville -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Napa R Nr St Helena Ca | 15 cfs | → |
| Sonoma Creek A Kenwood Ca | 3 cfs | → |
| Napa R Nr Napa Ca | 41 cfs | → |
| Putah C Nr Winters Ca | 362 cfs | → |
| Putah C Nr Guenoc Ca | 51 cfs | → |
| Sonoma C A Agua Caliente Ca | 14 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Maxville.
⚓ Boat launches
- Chaparral Cove Napa County
- Knoxville Road 1601, Napa County
- Napa Valley Vine Trail, Napa
- Cuttings Wharf Road 3175-3337, Napa
- Cuttings Wharf Road 3270, Napa
- Ball Park Avenue 14775, Clearlake
⛺ Campgrounds
- Camp Site 56-72
- Chaparral Cove - Lake Berryessa - Usbr
- Manzanita Canyon - Lake Berryessa - Usbr
- Camp Site 36-55
- Camp Site 1-35
- Camp Site 73-100
🎣 Fishing spots
- Lake Berryessa
- Berryessa Lake
- Lake Ralphine
- 9th Street Boat Ramp
- City Of Benicia Fishing Pier
- Lake Sonoma
🛶 Paddle runs
- Cache Creek
- Olema Ranch Campground To Caltrans Corporation Yard At Point Reyes Station
- 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.
Track Maxville 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 Maxville
Where does the data for Maxville 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 Maxville.