Dennys Pond Dam dam
Dennys Pond Dam
Dennys Pond Dam, located in Union, Illinois, is a private structure completed in 1966 with a primary purpose of fire protection, stock, or small fish pond. This earth dam stands at a height of 25 feet and spans 600 feet along the TRIB CACHE RIVER. With a maximum storage capacity of 46 acre-feet and a normal storage of 34 acre-feet, the dam serves as a vital resource for water management in the area.
Despite its low hazard potential, Dennys Pond Dam is regulated by the Illinois Department of Natural Resources, with state permitting, inspection, and enforcement in place. The dam features an uncontrolled spillway and outlet gates, with a moderate risk assessment indicating the need for ongoing monitoring and risk management measures. While the condition assessment is currently not available, the last inspection in July 2013 deemed the structure to be in satisfactory condition, ensuring the safety and reliability of this essential water resource for the community.
In the event of an emergency, the status of the Emergency Action Plan (EAP) for Dennys Pond Dam is not specified, highlighting the importance of preparedness and adherence to safety guidelines. With its strategic location and significant role in water storage and management, Dennys Pond Dam serves as a critical infrastructure for fire protection and aquatic life support, underlining the intersection of water resource management and climate resilience in the region.
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 Dennys Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cache River At Forman | 3 cfs | → |
| Crab Orchard Creek Near Marion | 2 cfs | → |
| Big Muddy River At Rte 127 At Murphysboro | 523 cfs | → |
| Mississippi River At Thebes | 269,000 cfs | → |
| South Fork Saline River Nr Carrier Mills | 22 cfs | → |
| Bayou Creek Near Grahamville | 5 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Dennys Pond Dam.
Boat launches
- Devil's Kitchen Boat Dock
- Access Road Pulaski County
- Cedar Creek Boat Ramp
- Broken Handle Lane 2599, Williamson County
- Clear Creek Levee Road Union County
- Hickory Johnson County
Campgrounds
- Horse Campground
- Turkey Ridge Tent Campground
- Little Grassy Campground & Marina
- Devil's Kitchen Campground
- Trail Of Tears State Forest
- Pine Hills
Fishing spots
- Dutchman Lake
- Little Cache Lake #1 (Bowman Lake)
- Lake Of Egypt
- One Horse Gap Lake
- Whoopie Cat Lake
- Lake Tecumseh
Paddle runs
- 1 Mile West Of Alto Pass, Il To 1/2 Mile South Of Confluence With Clear Creek, West Of Trail Of Tears State Forest
- 1/2 Mile Downstream Of Confluence With Kinkaid Creek To Confluence With Mississippi River, Approx 4 Miles South Of Grand Tower, Il
- 1 Minle Southwest Of Delwood, Il (Sec. 18, T11s, R13e) To Reesville, 1/4 Mile South Of The Confluence With Sugar Creek
- Bridge At Eddyville Blacktop To Confluence With Ohio River At Golconda,Il
- Source, About 2 Miles East Of Delwood, Il (Sec 10, T11s, R6e) To Bridge At Eddyville Blacktop (Se1/4,Sec.16,T12s, R6e)
- Wallace Cemetery Approx 2.5 Miles Nw Of Herod, Il To Confluence With Ohio River At Golconda Jobs Corp Center
Track Dennys Pond 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 Dennys Pond Dam
Where does the data for Dennys Pond 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 Dennys Pond Dam.