Lone Man Dam dam
Lone Man Dam
Lone Man Dam, located in Hays, Texas, is a private dam constructed on Lone Man Creek with a primary purpose listed as "Other". This buttress dam stands at a height of 13 feet and has a length of 120 feet, providing a storage capacity of 18 acre-feet. The dam's spillway type is categorized as uncontrolled, with a width of 120 feet to manage a maximum discharge of 17,000 cubic feet per second.
While the dam's hazard potential and condition assessment are not currently available, the risk assessment indicates a moderate level of risk. The structure has not been rated for its condition, but it underwent modifications in 1930. The last inspection of the dam was conducted in July 2009, with a frequency of inspections not specified. Despite being non-federally regulated, Lone Man Dam is permitted and inspected by the state of Texas, indicating a commitment to ensuring its safety and functionality for water resource management in the area.
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 Lone Man Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Blanco Rv At Wimberley | 3 cfs | → |
| Blanco Rv At Halifax Rch Nr Kyle | 4 cfs | → |
| Onion Ck Nr Driftwood | 0 cfs | → |
| Blanco Rv Nr Kyle | · | → |
| Blanco Rv At Fischer Store Rd Nr Fischer | 9 cfs | → |
| San Marcos Rv At San Marcos | 91 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lone Man Dam.
Boat launches
- Interstate 35 Frontage Road 2396, San Marcos
- Jacob's Creek Park. North Ramp. Canyon Lake.
- Old Hancock Road. Canyon Lake.
- Canyon Park. Canyon Lake.
- Jacob's Creek Park. Canyon Lake.
- Pecan Park Drive 442, San Marcos
Campgrounds
- Leisure Resort On The San Marco River
- North Park - Canyon Lake
- Canyon Lake Military - Randolph Afb
- Canyon - Canyon Lake
- Potters Creek - Canyon Lake
- Cranes Mill Park - Canyon Lake
Fishing spots
Track Lone Man 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 Lone Man Dam
Where does the data for Lone Man 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 Not Available 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 Lone Man Dam.