Avery Flood Control Site #2 Dam dam
Avery Flood Control Site #2 Dam
Avery Flood Control Site #2 Dam, also known as Avery Brook Site #2, is a state-owned structure located in South Windsor, Connecticut. Built in 1993 by USDA NRCS, this earth dam stands at a height of 23 feet and stretches 350 feet in length. It serves the primary purpose of flood risk reduction along the Wells Brook, with a storage capacity of 150 acre-feet and a maximum discharge rate of 95 cubic feet per second.
Managed and regulated by the Connecticut Department of Energy and Environmental Protection (DEEP), the dam is classified as having a high hazard potential but is currently assessed to be in satisfactory condition after its last inspection in January 2015. While the dam has uncontrolled spillways and outlet gates, its risk assessment is moderate, indicating a level 3 rating. With a notable design history and ongoing state oversight, Avery Flood Control Site #2 Dam is a critical piece of infrastructure for water resource and climate enthusiasts in the region.
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 Avery Flood Control Site #2 Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Hockanum River Near East Hartford | 82 cfs | → |
| Broad Brook At Broad Brook | 18 cfs | → |
| North Branch Park R At Hartford | 9 cfs | → |
| Connecticut River At Thompsonville | 26,800 cfs | → |
| Stony Brook Near West Suffield | 5 cfs | → |
| Farmington River At Tariffville | 569 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Avery Flood Control Site #2 Dam.
Boat launches
- New State Road Trail Manchester
- Bolton Lake (Lower)
- Bissell Bridge (Connecticut River)
- East River Drive East Hartford
- Wilbur Cross Highway East Hartford
- Kings Island (Connecticut River)
Campgrounds
- Beech Grove 5
- Wilderness Lake Campground
- Primitve Camping Area
- Brialee
- Roaring Brook Camp Area
- Deep Campsite
Fishing spots
- Trout Hatchery
- Great Brook Reservoir
- Lower Fulton Park Pond
- Lake Quassapaug
- Toms Creek
- Lake Washington Fishing Area
Paddle runs
- Begins Below The Tailrace Of The Rainbow Dam To The Confluence With The Connecticut River
- The Confluence Of The East And West Branches To The Confluence With The Farmington River In East Granby
- The Confluence With The Nepaug River To A Point 0.2 Miles Below The Lower Collinsville Dam Tailrace
- Begins Below The Tailrace Of The Lower Collinsville Dam To The Route 187 Bridge
- New Hartford/Canton Town Line To The Confluence With The Nepaug River
- The Massachusetts-Connecticut State Line In Hartland To The Confluence With The Salmon Brook Main Stem
Track Avery Flood Control Site #2 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 Avery Flood Control Site #2 Dam
Where does the data for Avery Flood Control Site #2 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 High 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 Avery Flood Control Site #2 Dam.