Corydon Lake reservoir
Corydon Lake
Corydon Lake is a man-made body of water in south-central Iowa near the town of Corydon. The lake was created in the 1970s as a flood control measure and for recreational purposes. The lake has a surface area of 121 acres and a maximum depth of 25 feet. It is fed by rainfall and runoff from surrounding agricultural land. The lake has a spillway that helps regulate the water level and prevent flooding downstream. The lake is used for fishing, boating, and other water sports, and is stocked with fish species including bass, crappie, and catfish. The surrounding area is also popular for hunting and camping. The lake is managed by the Iowa Department of Natural Resources.
Daily levels at Corydon Lake
Storage volume, pool elevation, and total release plotted from the operating agency's daily observations.
Streamflow, ft³/s
ft3/s · code 00060
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 Corydon Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| South Fork Chariton River Near Promise City | 24 cfs | → |
| Chariton River Near Chariton | 62 cfs | → |
| Chariton River Near Rathbun | 1,970 cfs | → |
| Thompson River At Davis City | 210 cfs | → |
| Chariton River Near Moulton | 2,200 cfs | → |
| White Breast Creek Near Dallas | 56 cfs | → |
About Corydon Lake
Where does the data for Corydon Lake come from?
Daily storage, pool elevation, and release rates are sourced from USGS, USBR, and USACE monitoring stations. Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
Storage observations are updated daily by the operating agency. The 15-day weather forecast refreshes throughout the day. Snoflo caches and renders the most recent observation -- check the "as of" timestamp on the storage card.
What does the Hazard 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 below 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 reservoir, set a threshold, and you'll get a push the moment conditions cross.