Diamond Lake Watershed Site C-14 dam
Diamond Lake Watershed Site C-14
Diamond Lake Watershed Site C-14 in Iowa is a significant earth dam completed in 1972 by the USDA NRCS with a primary purpose of fire protection, stock, or small fish pond, and flood risk reduction. Located in Poweshiek County, Iowa, near the city of Montezuma, this dam has a height of 29 feet and a length of 638 feet, providing a storage capacity of 115 acre-feet. The dam is state-regulated and inspected by the Iowa DNR, with a significant hazard potential and a moderate risk assessment rating.
The dam's spillway type is uncontrolled, and it is situated on TR-Moon Creek, with a drainage area of 0.81 square miles. With a surface area of 7.9 acres and a normal storage capacity of 42 acre-feet, Diamond Lake Watershed Site C-14 plays a crucial role in managing water resources in the region. Despite not being rated for condition assessment, the dam is actively monitored for potential risks and management measures are in place to ensure its safety and functionality for the local community and environment.
Water resource and climate enthusiasts can appreciate Diamond Lake Watershed Site C-14 for its role in fire protection, stock, and small fish pond management, as well as flood risk reduction in the area. With its historical significance and ongoing regulatory oversight, this earth dam serves as a key infrastructure for water management and environmental protection efforts in Poweshiek County, Iowa.
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 Diamond Lake Watershed Site C-14 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| South Skunk River Near Oskaloosa | 1,230 cfs | → |
| Walnut Creek Near Hartwick | 33 cfs | → |
| Big Bear Creek At Ladora | 122 cfs | → |
| Richland Creek Near Haven | 34 cfs | → |
| Iowa River Near Belle Plaine | 2,050 cfs | → |
| North Skunk River Near Sigourney | 319 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Diamond Lake Watershed Site C-14.
Boat launches
- 216th Street Iowa County
- Jade Street Jasper County
- Rock Creek East Street Jasper County
- Mahaska County
- State Highway 21 Iowa County
- 360th Street Tama County
Track Diamond Lake Watershed Site C-14 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 Diamond Lake Watershed Site C-14
Where does the data for Diamond Lake Watershed Site C-14 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 Diamond Lake Watershed Site C-14.