Fly-In-Acres dam
Fly-In-Acres
Fly-In-Acres is a privately owned dam located in Avery, California, along the Moran Creek. Built in 1953, this earth-type dam stands at a height of 41 feet and has a storage capacity of 58 acre-feet, primarily serving as a water supply source for the area. Despite its age, the dam has undergone regular inspections, with the last assessment in February 2021 noting its satisfactory condition.
The significant hazard potential of Fly-In-Acres highlights the importance of ongoing maintenance and monitoring to ensure the safety of the surrounding community. With state regulation, permitting, and enforcement in place, the dam is subject to rigorous oversight to mitigate risks and prevent potential disasters. Its role in providing water supply and supporting recreational activities underscores the vital role that infrastructure like Fly-In-Acres plays in managing water resources in California.
For water resource and climate enthusiasts, Fly-In-Acres serves as a case study in the intersection of infrastructure, regulation, and environmental stewardship. As the impacts of climate change continue to pose challenges to water management, understanding the operations and maintenance of dams like Fly-In-Acres is crucial for ensuring the resilience of water systems in the face of evolving climatic conditions.
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 Fly-In-Acres -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Black C Nr Copperopolis Ca | 1 cfs | → |
| Big C Ab Whites Gulch Nr Groveland Ca | 1 cfs | → |
| Cherry C Bl Valley Dam Nr Hetch Hetchy Ca | 144 cfs | → |
| Lk Eleanor Div To Cherry Lake Nr Hetch Hetchy Ca | 1 cfs | → |
| Eleanor C Nr Hetch Hetchy Ca | 328 cfs | → |
| Cherry C Bl Dion R Holm Ph | 1,590 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Fly-In-Acres.
Boat launches
Campgrounds
- Calaveras Big Trees State Park
- Boards Crossing
- Wakalu Hep Yo (Wild River) Campground
- Wa Ka Luu Hep Yoo (Wild River) Campground
- Wa Ka Luu Hep Yoo
- Sand Bar Flat Campground
Fishing spots
Paddle runs
- One Mile Downstream Of State Park Boundary In Sec 24, T5n, R15e To Mckay's Reservoir
- Below Mckay's Reservoir To Confluence With Middle Fork Stanislaus River
- Calaveras Big Trees State Park Boundary In Sec 24, T5n, R15e To One Mile Downstream Of State Park Boundary In Sec 24, T5n, R15e
- One-Quarter Mile Downstream Of Forest Road 5n75 Bridge Crossing To Calaveras Big Trees State Park Boundary In Sec 24, T5n, R15e
- Sandbar To Confluence With North Fork Stanislaus River
- One-Quarter Mile Upstream Of Forest Road 5no2 Bridge Crossing To One-Quarter Mile Downstream Of Forest Road 5n75 Bridge Crossing
Track Fly-In-Acres 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 Fly-In-Acres
Where does the data for Fly-In-Acres 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 Fly-In-Acres.