Twin Tanks dam
Twin Tanks
Twin Tanks, located in Pima County, Arizona, is a privately owned water resource that serves multiple purposes, including fire protection, stock, and small fish pond maintenance. The dam itself is an earth structure with a height of 24.3 feet and a length of 792 feet, providing a storage capacity of 68.9 acre-feet. The spillway is uncontrolled with a width of 31 feet, and the hazard potential of the dam is rated as low.
Managed by the Arizona Department of Water Resources, Twin Tanks is regulated, permitted, inspected, and enforced by the state. With its location in the Los Angeles District, the dam's primary purpose is categorized as "Other," reflecting its versatility in serving various water-related needs. Although the condition assessment is currently listed as "Not Rated," the risk assessment is moderate, indicating the importance of monitoring and maintaining this vital water resource in the region.
Water resource and climate enthusiasts interested in Twin Tanks will appreciate its strategic location in Tucson and its contribution to water management in the area. With a surface area of 8.5 acres and a drainage area that is not specified, this reservoir plays a crucial role in water storage and distribution for both private and state-owned entities. Overall, Twin Tanks stands as a testament to responsible water resource management in Arizona, showcasing the collaboration between private and public entities to ensure sustainable water usage and conservation 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 Twin Tanks -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cienga Creek Near Sonoita | 0 cfs | → |
| Pantano Wash Near Vail | · | → |
| Rincon Creek Near Tucson | · | → |
| Santa Cruz River At Continental | · | → |
| Pantano Wash At Broadway Blvd. At Tucson | · | → |
| Upper Babocomari River Near Huachuca City | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Twin Tanks.
Campgrounds
- Ag Fields Group Site
- Oak Tree Canyon Camp Area
- Airstrip Group Site
- Las Cienegas National Conservation Area - Entrance
- Maternity Well Group Site
- Las Cienegas Dispersed
Paddle runs
- Cienega Creek
- Babocomari River
- Wilderness Boundary To Coronado National Forest Boundary
- Marshall Gulch Recreation Area To Wilderness Boundary
- Headwaters To Pusch Ridge Wilderness Boundary
- Headwaters To 1/4 Mile South Of Forest Road 736
More reservoirs
Track Twin Tanks 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 Twin Tanks
Where does the data for Twin Tanks 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 Twin Tanks.