Clover Basin dam
Clover Basin
Located in the picturesque city of Longmont, Colorado, Clover Basin is a privately-owned irrigation structure that stands as a testament to early 20th-century engineering. Built in 1910, this Earth-type dam on Dry Creek-Tr serves multiple purposes including irrigation and recreation, making it a vital resource for the local community. With a dam height of 34 feet and a storage capacity of 984 acre-feet, Clover Basin plays a crucial role in water management in Boulder County.
Despite its age, Clover Basin remains in satisfactory condition as of the last assessment in May 2020, with a high hazard potential due to its location and structure. The dam features an uncontrolled spillway and a maximum discharge capacity of 12,150 cubic feet per second, ensuring effective flood control in the area. With its historical significance and ongoing operational importance, Clover Basin serves as a symbol of sustainable water resource management in the face of changing climate conditions.
As water resource and climate enthusiasts, the preservation and maintenance of structures like Clover Basin are crucial for ensuring a resilient and sustainable water supply for future generations. With its moderate risk assessment and regular inspections, Clover Basin stands as a testament to the importance of proactive risk management in safeguarding our water resources against the challenges of a changing climate. As we continue to face environmental uncertainties, Clover Basin serves as a reminder of the vital role that responsible water management plays in adapting to a rapidly changing world.
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 Clover Basin -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Left Hand Creek At Hover Road Near Longmont | 2 cfs | → |
| St. Vrain Creek At Lyons | 69 cfs | → |
| Left Hand Creek Near Boulder | 30 cfs | → |
| Boulder Cr At North 75th St Nr Boulder | 37 cfs | → |
| Boulder Creek At Mouth | 0 cfs | → |
| St. Vrain Creek Below Longmont | -999,999 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Clover Basin.
Boat launches
- Lagerman Trail Boulder County
- Miramonte Road Boulder County
- Standley Lake Trail Westminster
- Ralston Creek Trail Arvada
- West 69th Avenue 4700, Westminster
- Boat Ramp Larimer County
Campgrounds
- Boulder County Fairground
- Meadow Park
- Union Reservoir
- St. Vrain State Park
- Carter Lake - South Side Campgrounds
- North Pine Campground
Fishing spots
- Lagerman Reservoir
- Pella Crossing
- Golden Ponds
- Rogers Grove - Fairgrounds Lake
- Cattail Pond At Boulder County Fairgrounds
- Mcintosh Lake
Paddle runs
- October Hole
- Black Bear Hole & A-Hole
- Ssv - Confluence To Picnic Grounds
- Lower Boulder Canyon
- Nsv
- Begins 0.5 Miles Upstream From End Of County Hwy 115 To Eastern Boundary Of Rocky Mountain National Park
More reservoirs
Track Clover Basin 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 Clover Basin
Where does the data for Clover Basin 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 Clover Basin.