Davis No. 2 dam
Davis No. 2
Davis No. 2, also known as Twin Lakes, is a private-owned water resource located in Boulder, Colorado. This dam was completed in 1948 and serves primarily for irrigation purposes. With a height of 11 feet and a length of 600 feet, it has a storage capacity of 183 acre-feet and a surface area of 17 acres. The dam is regulated by the Department of Water Resources (DWR) in Colorado and has a low hazard potential with a satisfactory condition assessment.
The dam is situated on Dry Creek-OS and has a spillway width of 6 feet. Despite being inspected in 2013, with a moderate risk assessment rating of 3, the dam has not been modified in recent years. It is equipped with uncontrolled spillways and does not have associated locks. Furthermore, the dam has a regular inspection frequency of 6 years, ensuring its safe operation and maintenance. Davis No. 2 is an essential irrigation infrastructure in the region, contributing to the water resource management in Boulder County.
Overall, Davis No. 2 plays a crucial role in water supply management in Colorado, particularly for irrigation purposes. With its low hazard potential and satisfactory condition assessment, this dam is a vital component of the water infrastructure in the area. Regular inspections and adherence to state regulations ensure the safety and reliability of this water resource, highlighting its importance for both agricultural and environmental sustainability in 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 Davis No. 2 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Boulder Cr At North 75th St Nr Boulder | 154 cfs | → |
| Left Hand Creek At Hover Road Near Longmont | 2 cfs | → |
| Left Hand Creek Near Boulder | 55 cfs | → |
| Fourmile Creek At Orodell | 5 cfs | → |
| Boulder Creek Near Orodell | 78 cfs | → |
| St. Vrain Creek At Lyons | 274 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Davis No. 2.
Boat launches
- Lagerman Trail Boulder County
- Miramonte Road Boulder County
- Standley Lake Trail Westminster
- Ralston Creek Trail Arvada
- West 69th Avenue 4700, Westminster
- Brighton
Campgrounds
Fishing spots
- Walden Ponds - Ricky Weiser Wetland
- Walden Ponds - Bass Pond
- Sawhill Ponds #5
- Walden Ponds
- Sawhill Ponds #4
- Walden Ponds - Duck Pond
Track Davis No. 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 Davis No. 2
Where does the data for Davis No. 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 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 Davis No. 2.