Hendrickson Marsh Dam dam
Hendrickson Marsh Dam
Hendrickson Marsh Dam, located in Marshall County, Iowa, serves as a vital recreational resource for the local community. Completed in 1967, this earth dam stands at 18 feet high and stretches 321 feet in length, holding a storage capacity of 2,800 acre-feet. With a surface area of 264 acres and a drainage area of 13.19 square miles, the dam's primary purpose is to provide recreational opportunities for visitors in the area.
Managed by the Iowa Department of Natural Resources, the dam has a low hazard potential and is in satisfactory condition as of the last assessment in June 2020. The dam features an uncontrolled spillway with a width of 35 feet, ensuring the safe release of excess water during periods of high flow. Despite its moderate risk rating, the dam is regularly inspected and maintained to uphold safety standards and mitigate any potential risks to surrounding communities.
As a significant feature along the Marshall-Story D.D. #2 river system, Hendrickson Marsh Dam plays a crucial role in water resource management and climate resilience efforts in the region. Its presence not only enhances recreational opportunities but also serves as a reminder of the importance of sustainable infrastructure development in safeguarding our natural environment for future generations.
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 Hendrickson Marsh Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Indian Creek Near Mingo | 213 cfs | → |
| South Skunk River At Colfax | 631 cfs | → |
| Iowa River At Marshalltown | 768 cfs | → |
| South Skunk River Below Squaw Creek Near Ames | 424 cfs | → |
| Timber Creek Near Marshalltown | 88 cfs | → |
| Squaw Creek At Ames | 148 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Hendrickson Marsh Dam.
Boat launches
- Arney Avenue Marshall County
- 255th Street Story County
- 250th Street Story County
- Marsh Avenue Marshall County
- West Riverside Road Story County
- Waterbury Circle Ames
Track Hendrickson Marsh 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 Hendrickson Marsh Dam
Where does the data for Hendrickson Marsh 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 Hendrickson Marsh Dam.