Langholen dam
Langholen
Langholen is a private irrigation dam located in Parshall, Colorado, on Battle Creek. Built in 1915, this earth dam stands at 24 feet in height and has a storage capacity of 158 acre-feet. The dam serves the primary purpose of irrigation and has a normal storage level of 64 acre-feet, covering a surface area of 10 acres with a drainage area of 14 square miles.
Despite being of low hazard potential, Langholen underwent structural modifications in 1991 to ensure its safety and functionality. The dam features a slide (sluice gate) outlet gate and an uncontrolled spillway with a width of 22 feet. With a maximum discharge capacity of 580 cubic feet per second, Langholen is regulated, inspected, and enforced by the Colorado Department of Water Resources, ensuring compliance with state permitting and inspection requirements.
While Langholen presents a moderate risk level (3), its condition assessment in 2015 deemed it satisfactory. The dam is equipped to handle emergencies with a designated emergency action plan (EAP) preparation status unknown. With its historical significance and ongoing maintenance, Langholen stands as a testament to early irrigation infrastructure in Colorado, serving as a vital water resource for the surrounding agricultural community.
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 Langholen -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Williams Fork Near Parshall | 56 cfs | → |
| Williams Fork Below Williams Fork Reservoir | 17 cfs | → |
| Blue River Below Green Mountain Reservoir | 63 cfs | → |
| Williams Fork Near Leal | 100 cfs | → |
| South Fork Of Williams Fork Near Leal | 44 cfs | → |
| Williams Fork Above Darling Creek | 28 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Langholen.
Boat launches
- Co 9 Summit County
- Confluence Rec Site Boat Ramp
- Willow Creek Boating Site
- Radium Rec Site Boat Ramp
- Cr 6 Grand County
- Us 34 Grand County
Campgrounds
- Mule Creek - Skylark Rec Area
- Mule Creek - Skylark Rec Area Campground
- Morgan Gulch Rec Site Camping
- Williams Fork Reservoir - Swa
- Cow Creek South Campground
- Cow Creek North Campground
Fishing spots
- Williams Fork Reservoir
- Green Mountain Reservoir
- Lower Cataract Lake
- Upper Cataract Lake
- Wolford Mountain Reservoir
- Willow Creek Fishing Site
Paddle runs
More reservoirs
Track Langholen 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 Langholen
Where does the data for Langholen 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 Langholen.