Marston Lake - East Dam dam
Marston Lake - East Dam
Marston Lake - East Dam, located in Denver, Colorado, is a crucial water supply structure built in 1899. This earth dam stands 17 feet tall and stretches 1000 feet in length, with a storage capacity of 21,100 acre-feet. The dam overlooks the South Platte River-OS and serves as a vital component in water resource management for the region.
With a high hazard potential and fair condition assessment, Marston Lake - East Dam is subject to regular inspections and enforcement by the Colorado Department of Water Resources. Despite its age, the dam continues to play a significant role in maintaining water supply for Denver and surrounding areas. The spillway, with a width of 20 feet, provides an uncontrolled outlet in case of overflow, ensuring the safety and stability of the structure.
As a public utility-owned dam, Marston Lake - East Dam is a testament to historic engineering and water management practices. Its strategic location and considerable storage capacity make it a critical asset for securing water resources in the face of changing climates and increasing demands. Climate enthusiasts and water resource experts alike can appreciate the significance of this structure in ensuring sustainable water supply for the region.
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 Marston Lake - East Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Bear Creek At Mouth | 18 cfs | → |
| South Platte River Below Union Ave | 34 cfs | → |
| South Platte River At Englewood | 65 cfs | → |
| Harvard Gulch At Harvard Park | 1 cfs | → |
| Harvard Gulch At Colorado Blvd. | 0 cfs | → |
| Bear Creek Above Bear Creek Lake Near Morrison | 4 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Marston Lake - East Dam.
Boat launches
- West Quincy Avenue Denver
- Chatfield Lake North Boat Ramp
- Fisherman's Trail Lakewood
- C-470 Trail Lakewood
- Cherry Creek Park Road Centennial
- West 69th Avenue 4700, Westminster
Campgrounds
- Chatfield State Park
- Bear Creek Lake Park
- Chief Ouray Group Site
- Cherokee Group Site
- Arapahoe Group Site
- Cherry Creek State Park
Fishing spots
Track Marston Lake - East 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 Marston Lake - East Dam
Where does the data for Marston Lake - East 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 Marston Lake - East Dam.