Talmage Hill Dam dam
Talmage Hill Dam
Talmage Hill Dam, located in Grand River, Iowa, is a local government-owned structure with a primary purpose of recreation. Built in 1985 by the Soil Conservation Service (SCS), this earth dam stands at a height of 25 feet and stretches 400 feet in length. Situated on the TR-Thompson River, it serves as a recreational spot for residents and visitors alike, offering a surface area of 7 acres and a maximum storage capacity of 123 acre-feet.
Despite being classified as having a low hazard potential, Talmage Hill Dam is regulated and inspected by the Iowa Department of Natural Resources (DNR) to ensure its safe operation. The dam has a moderate risk assessment rating of 3, indicating a need for ongoing risk management measures. While the last inspection took place in 1995, the condition of the dam is currently listed as "Not Rated," highlighting the importance of regular assessments and maintenance to prevent any potential hazards.
In the event of an emergency, the dam's Emergency Action Plan (EAP) status is unspecified, calling attention to the need for updated emergency contacts and preparedness guidelines. With its serene location and vital role in water resource management, Talmage Hill Dam stands as a reminder of the intersection between human recreation and environmental stewardship in the face of changing climate conditions.
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 Talmage Hill Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Thompson River At Davis City | 11,000 cfs | → |
| Raccoon River At Van Meter | 2,730 cfs | → |
| North River Near Norwalk | 704 cfs | → |
| Middle River Near Indianola | 1,450 cfs | → |
| South River Near Ackworth | 9,780 cfs | → |
| Raccoon River Near West Des Moines | 1,320 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Talmage Hill Dam.
Track Talmage Hill Dam 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 Talmage Hill Dam
Where does the data for Talmage Hill Dam 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 Talmage Hill Dam.