Cedar City - Greens Lake No. 4 dam
Cedar City - Greens Lake No. 4
Cedar City - Greens Lake No. 4 is a significant Earth dam located in Iron, Utah, constructed in 1958 by the USDA NRCS for flood risk reduction purposes. This dam is owned and regulated by the local government, with oversight from the Utah Division of Water Rights. The dam has a hydraulic height of 6 feet and a structural height of 11 feet, providing a storage capacity of 88 acre-feet with a normal storage level of 29 acre-feet.
Situated in the beautiful city of Cedar City, Utah, this dam plays a crucial role in managing water resources and mitigating flood risks in the area. Although the condition assessment is currently not rated, regular inspections are conducted, with the last one taking place in October 2020. With a hazard potential classified as significant, it underscores the importance of maintaining and monitoring this dam to ensure its effectiveness in protecting the surrounding community and environment.
Water resource and climate enthusiasts will appreciate the engineering feat of Cedar City - Greens Lake No. 4, designed by the USDA NRCS to safeguard against potential flooding events. With its strategic location and operational oversight by the local government and state regulatory agency, this Earth dam serves as a vital infrastructure for water management in Iron, Utah. As efforts continue to enhance its risk management measures and emergency preparedness, this dam remains a key component in ensuring water security and resilience 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 Cedar City - Greens Lake No. 4 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Coal Creek Near Cedar City | 25 cfs | → |
| Mammoth Creek Abv West Hatch Ditch | 40 cfs | → |
| North Fork Virgin River Near Springdale | 44 cfs | → |
| Santa Clara River Near Pine Valley | 10 cfs | → |
| Virgin River At Virgin | 97 cfs | → |
| Leeds Creek Near Leeds | 7 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Cedar City - Greens Lake No. 4.
Boat launches
Campgrounds
- Cedar Canyon Campground
- Cedar Canyon
- Deer Haven Campground
- Visitor Parking
- Point Supreme - Cedar Breaks National Monument
- Cedar Breaks Nm Campground
Fishing spots
Track Cedar City - Greens Lake No. 4 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 Cedar City - Greens Lake No. 4
Where does the data for Cedar City - Greens Lake No. 4 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 Significant 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 Cedar City - Greens Lake No. 4.