Randall Dam dam
Randall Dam
Randall Dam, located in Coralville Reservoir in Johnson County, Iowa, is a privately owned structure with a primary purpose of fire protection and serving as a small fish pond. The dam, which was completed in 1976, stands at a height of 31 feet and has a length of 340 feet, creating a storage capacity of 32 acre-feet. With a surface area of 2.1 acres and a drainage area of 0.08 square miles, the dam plays a crucial role in managing water resources in the region.
Managed by the Iowa Department of Natural Resources, Randall Dam is regulated, permitted, inspected, and enforced by state authorities to ensure its structural integrity and compliance with safety standards. The dam has a low hazard potential and a moderate risk assessment level, indicating that it is well-maintained and poses minimal risk to surrounding areas. Despite not being rated for its condition assessment, Randall Dam continues to serve its purpose effectively, contributing to water management and conservation efforts in the area.
Designed by the USDA Natural Resources Conservation Service, Randall Dam serves as a vital structure in the region, providing essential water storage and management capabilities for firefighting, livestock, and recreational purposes. Climate and water resource enthusiasts will appreciate the dam's role in mitigating flood risks, supporting local ecosystems, and enhancing water sustainability in the Iowa River watershed.
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 Randall Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Clear Creek Near Oxford | 26 cfs | → |
| Iowa River Below Coralville Dam Nr Coralville | 2,140 cfs | → |
| Clear Creek Near Coralville | 29 cfs | → |
| Cedar River At Cedar Rapids | 4,490 cfs | → |
| Rapid Creek Near Iowa City | 10 cfs | → |
| Iowa River At Iowa City | 2,160 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Randall Dam.
Boat launches
- Poplar Avenue Northeast Big Grove Township
- Lake Mcbride Road Northeast Big Grove Township
- Lake Mcbride Road East Big Grove Township
- Falcon Lane Big Grove Township
- Anglers Point Road Northeast Big Grove Township
Track Randall 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 Randall Dam
Where does the data for Randall 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 Randall Dam.