Hidden Lake dam
Hidden Lake
Hidden Lake, also known as Mayham or Mud Lake, is a privately owned water resource located in Adams County, Colorado. This recreational dam, completed in 1958, stands at a height of 10 feet and has a maximum storage capacity of 650 acre-feet. The dam serves the primary purpose of recreation, offering opportunities for activities like fishing and boating on its 111-acre surface area.
Situated near the Clear Creek-OS river, Hidden Lake's low hazard potential and satisfactory condition assessment make it a safe and enjoyable destination for water and climate enthusiasts. The dam features an uncontrolled spillway with a width of 650 feet, and its surrounding area is regulated and inspected by the Colorado Department of Water Resources. With a moderate risk assessment score of 3, Hidden Lake provides a tranquil environment for visitors to appreciate the beauty of nature while ensuring the safety of its surrounding community.
Maintaining a strong emphasis on safety and environmental preservation, Hidden Lake's infrastructure is regularly inspected every six years to ensure its operational integrity. With its serene location and ample recreational opportunities, this privately owned water resource in Westminster, Colorado, is a hidden gem for outdoor enthusiasts looking to connect with nature and enjoy the benefits of sustainable water management in a picturesque setting.
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 Hidden Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Dry Creek At Westminster | 1 cfs | → |
| South Platte R At 64th Ave. Commerce City | 83 cfs | → |
| Clear Creek At Mouth | 5 cfs | → |
| South Platte River At Denver | 103 cfs | → |
| Sand Crk Abv Burlington Ditch Nr Commerce City | 8 cfs | → |
| Cherry Creek At Denver | 41 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Hidden Lake.
Boat launches
- West 69th Avenue 4700, Westminster
- Standley Lake Trail Westminster
- Ralston Creek Trail Arvada
- West Quincy Avenue Denver
- Fisherman's Trail Lakewood
- C-470 Trail Lakewood
Campgrounds
- Standley Lake
- Tipi Village
- Clear Creek Rv Park
- Bear Creek Lake Park
- Chief Ouray Group Site
- Cherokee Group Site
Fishing spots
Track Hidden Lake 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 Hidden Lake
Where does the data for Hidden Lake 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 Hidden Lake.