Sandy City - Flat Iron Mesa dam
Sandy City - Flat Iron Mesa
Sandy City - Flat Iron Mesa is a local government-owned dam in Utah, designed for flood risk reduction. The dam is regulated by the Utah Division of Water Rights and meets state permitting, inspection, and enforcement requirements. Located in Salt Lake County, the dam has a hydraulic height of 5.5 feet and a structural height of 6.5 feet, with a NID height of 7 feet. It has a storage capacity of 4 acre-feet and a normal storage level of 2.2 acre-feet.
With a hazard potential rated as high, Sandy City - Flat Iron Mesa has a satisfactory condition assessment as of the last inspection in October 2019. The dam does not have an Emergency Action Plan (EAP) prepared or updated, but it meets state guidelines and has not undergone risk assessment or management measures. Despite being a local government-owned structure, the dam is not under the jurisdiction of any federal agency and does not receive federal funding or oversight. Water resource and climate enthusiasts will find Sandy City - Flat Iron Mesa to be an interesting case study in local flood risk reduction infrastructure in the state of Utah.
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 Sandy City - Flat Iron Mesa -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Cottonwood Creek @ Jordan River Nr Slc | 44 cfs | → |
| Surplus Canal @ Salt Lake City | 262 cfs | → |
| Jordan River @ 1700 South @ Salt Lake City | 144 cfs | → |
| Red Butte Creek At Fort Douglas | 1 cfs | → |
| American Fk Ab Upper Powerplant Nr American Fk | 53 cfs | → |
| Mcleod Creek Near Park City | 6 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Sandy City - Flat Iron Mesa.
Boat launches
- Oquirrh Lake Boat Ramp
- Redwood Road Salt Lake City
- Jordan River Drive 1328, North Salt Lake
- North Vineyard Road 4888, Vineyard
- Deer Creek State Park- Charleston Day Use Area
- Dwight D. Eisenhower Highway Magna
Campgrounds
- Tanners Flat Campground
- Tanners Flat
- Jordan Pines Group Campground
- Spruces Campground
- Spruces
- Camp Kostopulos
Fishing spots
- Lake Lillian
- Lake Florence
- Mill Canyon Fishing Dock And Boardwalk
- Lake Solitude
- Lake Martha
- Lake Desolation
Track Sandy City - Flat Iron Mesa 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 Sandy City - Flat Iron Mesa
Where does the data for Sandy City - Flat Iron Mesa 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 Sandy City - Flat Iron Mesa.