Harmony Creek Watershed Site 7 dam
Harmony Creek Watershed Site 7
Harmony Creek Watershed Site 7, located in Harrison, Iowa, is a crucial water management structure owned by the local government with oversight by the Iowa Department of Natural Resources. Designed by the USDA NRCS and completed in 1958, this earth dam serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. With a maximum storage capacity of 199 acre-feet and a surface area of 7.8 acres, the dam plays a vital role in managing water resources in the region.
The dam, standing at a height of 40 feet and spanning a length of 430 feet, is equipped with an uncontrolled spillway and has a low hazard potential according to its risk assessment. Although the condition assessment is currently not rated, the dam is subject to state regulation, permitting, inspection, and enforcement. Despite its moderate risk level, the dam at Harmony Creek Watershed Site 7 continues to serve as a key infrastructure for water resource management in the area, demonstrating the importance of sustainable practices in climate adaptation and resilience.
As water resource and climate enthusiasts, understanding and monitoring the condition and management of structures like Harmony Creek Watershed Site 7 is essential for ensuring the sustainability and resilience of our water systems. By recognizing the critical role of this dam in flood risk reduction and water storage, we can appreciate the efforts of local government and regulatory agencies in safeguarding our communities against potential hazards and ensuring the long-term viability of our water resources.
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 Harmony Creek Watershed Site 7 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Boyer River At Logan | 520 cfs | → |
| Soldier River At Pisgah | 165 cfs | → |
| West Nishnabotna River At Hancock | 326 cfs | → |
| Little Sioux River Near Turin | 3,050 cfs | → |
| Monona-Harrison Ditch Near Turin | 449 cfs | → |
| Missouri River At Omaha | 34,200 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Harmony Creek Watershed Site 7.
Boat launches
- Desoto Bend Nwr
- Blair City Boat Ramp
- Dodge Park Road , 68112:68152 Omaha
- Pelican Point
- Nebraska Boat Ramp
- Park Road Council Bluffs
Track Harmony Creek Watershed Site 7 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 Harmony Creek Watershed Site 7
Where does the data for Harmony Creek Watershed Site 7 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 Harmony Creek Watershed Site 7.