South Old Quarry Hollow Dam dam
South Old Quarry Hollow Dam
South Old Quarry Hollow Dam in Missouri is a privately owned structure designed by William K. Beckman and regulated by the Dam and Reservoir Safety Program. This earth and rockfill dam stands at a height of 141 feet and has a maximum storage capacity of 1150 acre-feet, with a normal storage level of 38 acre-feet. The dam, located in Ste. Genevieve County, Missouri, serves as a water resource along the TR-Mississippi River, with a drainage area of 150 square miles.
Despite its low hazard potential and satisfactory condition assessment, South Old Quarry Hollow Dam poses a moderate risk due to its moderate risk assessment rating of 3 on a scale of 1 to 5. The dam has an uncontrolled spillway type with a width of 16 feet, and last underwent inspection in May 2016 with a scheduled inspection frequency of every 5 years. Although no emergency action plan (EAP) has been prepared for the dam, it meets regulatory guidelines and has not been assigned a Dam Safety Action Classification (DSAC) date. Overall, South Old Quarry Hollow Dam presents an intriguing case study for water resource and climate enthusiasts interested in the management and assessment of dams.
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 South Old Quarry Hollow Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Big River Below Desloge | 80 cfs | → |
| Richland Creek Near Hecker | 51 cfs | → |
| Kaskaskia River At New Athens | 5,390 cfs | → |
| Big River Near Richwoods | 346 cfs | → |
| Mississippi River At Chester | 247,000 cfs | → |
| Mattese Creek Near Mattese | 4 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near South Old Quarry Hollow Dam.
Boat launches
- Choctaw Drive St. Francois County
- Phegley Resort Lane Randolph County
- Randolph County
- Williamson Road Oakville
- Il 13 New Athens
- Lemay Ferry Road Oakville
Campgrounds
- Hawn State Park
- St. Francois State Park
- Fort Kaskaskia State Park
- Washington State Park
- St. Joe State Park
- Randolph County State Conservation Area
Fishing spots
Paddle runs
- Forest Boundary At North Section Line Of Sec 4, T33n, R5e To Forest Boundary At South Section Line Of Sec 35, T32n, R5e
- 1/2 Mile Downstream Of Confluence With Kinkaid Creek To Confluence With Mississippi River, Approx 4 Miles South Of Grand Tower, Il
- State Highway 49 Bridge Near Dillard, Missouri To Forest Boundary In Sections 13/24, T38n, R3w
Track South Old Quarry Hollow 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 South Old Quarry Hollow Dam
Where does the data for South Old Quarry Hollow 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 South Old Quarry Hollow Dam.