Weber - South Dam dam
Weber - South Dam
Weber - South Dam, located in Montezuma County, Colorado, is a vital earth dam constructed in 1902 by the USDA NRCS for irrigation purposes along the West Fork Mancos River. This privately-owned structure stands at a height of 25 feet with a hydraulic height of 25 feet and a structural height of 29 feet, stretching 961 feet in length. It has a storage capacity of 652 acre-feet, with a normal storage level of 442 acre-feet, serving multiple functions including fire protection, stock, and small fish pond management.
The dam's spillway, with a width of 220 feet, is uncontrolled, and it is equipped with a single slide (sluice gate) outlet gate. Despite being classified as having a low hazard potential, it undergoes regular inspections every six years, with the last assessment in April 2019 revealing a satisfactory condition. With a moderate risk assessment score of 3, the dam is regulated, permitted, inspected, and enforced by the Colorado Division of Water Resources, ensuring its safety and functionality for the community of Mancos and the surrounding areas.
Weber - South Dam is an essential piece of infrastructure that not only supports agricultural irrigation but also contributes to fire protection and wildlife management in the region. With its historical significance dating back over a century, this earth dam continues to play a crucial role in water resource management and climate resilience efforts in Colorado, highlighting the importance of sustainable water infrastructure in the face of changing environmental conditions.
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 Weber - South Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| La Plata River At Hesperus | 73 cfs | → |
| Lost Canyon Creek Near Dolores | 0 cfs | → |
| Dolores River At Dolores | 528 cfs | → |
| Dolores River Below Rico | 282 cfs | → |
| Animas River At Durango | 1,130 cfs | → |
| Animas River Blw Durango Pump Plant Nr Durango | 1,130 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Weber - South Dam.
Campgrounds
- West - Mancos State Park
- Main - Mancos State Park
- Target Tree Campground
- Target Tree
- Transfer Campground
- Transfer
Fishing spots
Track Weber - South Dam 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 Weber - South Dam
Where does the data for Weber - South Dam 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 Weber - South Dam.