Alessi Flood Control Dam dam
Alessi Flood Control Dam
The Alessi Flood Control Dam, located in Walsenburg, Colorado, along the Pictou Arroyo river, was completed in 1970 by the USDA NRCS to primarily reduce flood risks in the area. This earth dam stands at a height of 29 feet with a structural height of 35 feet and a length of 2197 feet. It has a maximum storage capacity of 224 acre-feet and covers a surface area of 14 acres, serving as a vital infrastructure for flood control in the region.
The dam is regulated by the Colorado Department of Water Resources and undergoes regular inspections to ensure its structural integrity. With a high hazard potential and fair condition assessment, the Alessi Flood Control Dam plays a crucial role in mitigating flood risks for the local community. Despite its high risk factor, the dam has been maintained and operated effectively to protect the surrounding area from potential flooding events.
As a significant asset in flood risk reduction, the Alessi Flood Control Dam demonstrates the importance of proactive infrastructure management to safeguard communities from the impacts of extreme weather events and climate change. Its strategic location, design, and capacity contribute to the overall resilience of the region against potential flood hazards, making it a vital piece of water resource infrastructure in Colorado.
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 Alessi Flood Control Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Huerfano River At Badito | 13 cfs | → |
| Cucharas River At Boyd Ranch | 5 cfs | → |
| Huerfano R At Manzanares Xing | 15 cfs | → |
| Huerfano R Bl Huerf Valy Dam Nr Undercliffe | 0 cfs | → |
| Trinchera C Ab Turners Ranch | 6 cfs | → |
| Purgatoire River At Trinidad | 29 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Alessi Flood Control Dam.
Campgrounds
- Pinon - Lathrop State Park
- Yucca - Lathrop State Park
- Camp Joseph
- Greenhorn Meadows Park
- Cordova Pass Picnic Area And Campground
- Bear Lake
Fishing spots
- Martin Lake
- Horseshoe Reservoir (Lathrop Sp)
- Huerfano State Wildlife Area
- Daigre And Wahatoya Lake
- Wahatoya Lake Reservoir
- Lake Beckwith
Track Alessi Flood Control 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 Alessi Flood Control Dam
Where does the data for Alessi Flood Control 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 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 Alessi Flood Control Dam.