Saganashkee Slough 1 Dam dam
Saganashkee Slough 1 Dam
Saganashkee Slough 1 Dam, located in Lemont, Illinois, is a key structure on the Trib Calumet Sag Channel, serving primarily for recreational purposes. The dam, completed in 1948, stands at a height of 14 feet and stretches 950 feet in length, with a storage capacity of 2379 acre-feet. Despite its age, the dam is regulated and inspected by the Illinois Department of Natural Resources, ensuring its safety and functionality for the community.
With a significant hazard potential and moderate risk assessment, the Saganashkee Slough 1 Dam remains a critical feature in the local water resource management. While the condition assessment is not currently available, the dam's emergency action plan status and risk management measures are yet to be determined. The structure's design by Warren & Van Praag & C/S Engineers showcases a fusion of engineering expertise and natural resource preservation, reflecting a balance that appeals to water resource and climate enthusiasts alike.
As enthusiasts track the updates on Saganashkee Slough 1 Dam, they can appreciate its important role in the area's water management and recreation activities. From its uncontrolled spillway to the 718 acre-feet of normal storage capacity, the dam stands as a testament to human ingenuity in harnessing water resources for both practical and leisure purposes. With ongoing inspections and regulatory oversight, this earth dam continues to be a focal point for those interested in the intersection of infrastructure, environment, and climate resilience.
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 Saganashkee Slough 1 Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Flag Creek Near Willow Springs | 14 cfs | → |
| Sawmill Creek Near Lemont | 5 cfs | → |
| Long Run Near Lemont | 13 cfs | → |
| Tinley Creek Near Palos Park | 9 cfs | → |
| Salt Creek At Western Springs | 204 cfs | → |
| East Branch Du Page River At Bolingbrook | 110 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Saganashkee Slough 1 Dam.
Boat launches
- 107th Street Palos Township
- Mcguire Parkway Lemont Township
- Tri-State Tollway Justice
- Fairbank Road Riverside
- Dupage River Trail Bolingbrook
- South Halsted Street Riverdale
Campgrounds
- Pioneer Grove
- Camp Bullfrog Lake
- Camp Shabbona Woods
- Blackwell Youth Campground
- Des Plaines State Conservation Area
Fishing spots
Track Saganashkee Slough 1 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 Saganashkee Slough 1 Dam
Where does the data for Saganashkee Slough 1 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 Significant 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 Saganashkee Slough 1 Dam.