Lake Oz Dam dam
Lake Oz Dam
Lake Oz Dam, located in Boerne, Texas, serves as a crucial structure for irrigation purposes along Frederick Creek. Completed in 1964, this gravity-type dam stands at a height of 12 feet and has a length of 500 feet, with a storage capacity of 50 acre-feet. Despite being privately owned, the dam is subject to state permitting and inspection requirements, ensuring its safety and functionality for the surrounding area.
While the dam lacks a spillway and has not been inspected since 1978, its hazard potential is currently listed as "Not Available." However, with a risk assessment rating of "High (2)," it is evident that there are potential concerns that need to be addressed. The dam's condition assessment is marked as "Not Rated," indicating a need for further evaluation and maintenance to mitigate any potential risks associated with its operation.
With its location in Kendall County, Texas, Lake Oz Dam stands as a vital component of the local water resource infrastructure. As water resource and climate enthusiasts, it is essential to monitor and advocate for the safety and regulation of dams like Lake Oz to ensure the sustainable management of water for irrigation and environmental purposes.
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 Lake Oz Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cibolo Ck Nr Boerne | 3 cfs | → |
| San Geronimo Ck Nr Helotes | 1 cfs | → |
| Guadalupe Rv At Comfort | 36 cfs | → |
| Helotes Ck At Helotes | · | → |
| Salado Ck At Wilderness Rd At San Antonio | 0 cfs | → |
| Medina Rv At Bandera | 11 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Oz Dam.
Boat launches
- Pop's Place. Medina Lake.
- Paradise Canyon. Medina River Access.
- Nichols Landing. Guadalupe River Access
- Rebecca Creek. Canyon Lake.
- Woodlawn Lake Trail San Antonio
- Wayne Smith Dam, Blanco
Campgrounds
- Kerrville - Schreiner City Park
- Butterfly Springs Camp Area
- Hermit's Shack Camp Area
- Wilderness Camp Area
- Lackland Afb Military
- Blanco State Park
Fishing spots
Track Lake Oz 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 Lake Oz Dam
Where does the data for Lake Oz 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 Lake Oz Dam.