Lyons Lake Dam dam
Lyons Lake Dam
Lyons Lake Dam, also known as Grimes Dam, is a private earth dam located in Madison, Georgia. Built by the Soil Conservation Service (SCS) in 1974, the dam stands at a height of 31 feet with a hydraulic height of 27 feet. The primary purpose of the dam is for recreation, providing a storage capacity of 103 acre-feet and a surface area of 7 acres.
With a low hazard potential and a moderate risk assessment rating, Lyons Lake Dam has not been rated for its condition assessment. The dam features uncontrolled spillways and outlets gates, with a last inspection date in April 2016. While the dam is not state regulated, it is under state jurisdiction and is subject to periodic inspections.
Despite its age, Lyons Lake Dam continues to serve as a recreational spot in the Bond Environs area. Water resource and climate enthusiasts interested in the dam can appreciate its historical significance, design characteristics, and the potential for outdoor activities around the lake.
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 Lyons Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Broad River Above Carlton | 365 cfs | → |
| South Fork Broad River At Carlton | 87 cfs | → |
| Beaverdam Creek Ab Elberton Ga | 26 cfs | → |
| North Oconee River At College St | 73 cfs | → |
| Middle Oconee River Near Athens | 120 cfs | → |
| Middle Oconee River Near Arcade | 135 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lyons Lake Dam.
Boat launches
- Tugaloo Point Franklin County
- Tugaloo State Park Road Franklin County
- Choestoea Road Oconee County
- Boat Ramp Hart County
- Glenn Ferry Road Anderson County
Campgrounds
Fishing spots
Paddle runs
- Confluence Of Brasstown Creek And Little Brasstown Creek Just South Of Brasstown Falls Road (Fs 751) To Confluence Of Mill Branch, Brasstown Creek And Boatwright Creek Near Boatwright Road (Fs 753)
- Confluence Of Cedar Creek To 1/4 Mile Below The Nf Boundary And Fh 110, Cobbs Bridge Road
- South Of Cedar Creek Rifle Range To Confluence With Chauga River
- 1/4 Mile Below Fs 745 And Cassidy Bridge Hunt Camp To Confluence Of Cedar Creek
- Crpssing Of Land Bridge Road, Sc 196 To 1/4 Mile Below Fs 745 And Cassidy Bridge Hunt Camp
- Earl's Ford To Route 76 (Section 3)
Track Lyons Lake 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 Lyons Lake Dam
Where does the data for Lyons Lake 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 Lyons Lake Dam.