North Poudre # 2 dam
North Poudre # 2
North Poudre #2, also known as Demmel Lake, is a privately owned irrigation dam located in Larimer County, Colorado. Completed in 1955, this earth dam stands at a height of 33 feet and has a storage capacity of 4,450 acre-feet. With a surface area of 295 acres and a drainage area of 5 square miles, the dam plays a crucial role in water resource management along the Cache La Poudre River.
The dam has been modified several times over the years, with hydraulic and structural upgrades in 1955 and further improvements in 1990. Its spillway, with a width of 350 feet, is uncontrolled, allowing for the safe release of excess water during periods of high discharge. Despite being classified as having a high hazard potential, the dam's condition is assessed as satisfactory following the latest inspection in June 2020.
North Poudre #2 serves as a vital infrastructure for irrigation purposes in the region, impacting water availability and agricultural activities in the surrounding areas. With its strategic location and capacity to store water, the dam embodies the intersection of water resource management and climate resilience, highlighting the importance of maintaining and monitoring such structures to ensure the safety and sustainability of water systems 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 North Poudre # 2 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cache La Poudre River At Fort Collins | 273 cfs | → |
| Cache La Poudre R A Mo Of Cn | 604 cfs | → |
| Cache La Poudre R Ab Boxelder C | 289 cfs | → |
| North Fork Cache La Poudre R. At Livermore | 6 cfs | → |
| N Frk Cache La Poudre R Blw Halligan Res Nr V Dal | 1 cfs | → |
| Buckhorn Creek Near Masonville | 20 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near North Poudre # 2.
Boat launches
- Filter Plant River Access Point (Put-In)
- Bridges River Access Point (Take-Out #2)
- Bridges River Access Point (Take-Out)
- Bridges River Access Point (Put-In)
- Pineview River Access Point (Put-In, Take-Out)
- Boat Ramp Larimer County
Campgrounds
- Inlet Bay - Horsetooth Reservoir
- South Bay - Horsetooth Reservoir
- Ansel Watrous Campground
- Ansel Watrous
- Stove Prairie Campground
- Stove Prairie
Fishing spots
- Smith Lake (Lar. Cty.) (Boxelder #3)
- Douglas Reservoir
- Greenbriar Park Lake
- North Shields Ponds
- Mcmurry Ponds
- Watson Lake
Paddle runs
Track North Poudre # 2 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 North Poudre # 2
Where does the data for North Poudre # 2 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 North Poudre # 2.