Seymour Reservoir #2 Dam dam
Seymour Reservoir #2 Dam
Seymour Reservoir #2 Dam, located in Oxford, Connecticut, was completed in 1948 and serves as a critical water supply source for the region. This masonry dam stands at a height of 31 feet and has a storage capacity of 590 acre-feet, with a normal storage level of 520 acre-feet. The dam has a surface area of 23 acres and drains an area of 1.16 square miles, making it a significant water resource infrastructure in the area.
With a spillway width of 26 feet and a maximum discharge capacity of 500 cubic feet per second, Seymour Reservoir #2 Dam is designed to manage water flow effectively and ensure the safety of the surrounding areas. The dam is regulated by the Connecticut Department of Energy and Environmental Protection (DEEP) and undergoes regular inspections to assess its condition. As of the last inspection in April 2015, the dam was rated as being in fair condition with a significant hazard potential, highlighting the importance of ongoing maintenance and monitoring to safeguard the community and environment.
Despite its age, Seymour Reservoir #2 Dam continues to play a crucial role in providing reliable water supply to the residents of New Haven County. The dam's presence underscores the intersection of water resource management and climate resilience, as it serves as a key infrastructure asset in the face of changing climate patterns and water availability challenges. As efforts to enhance dam safety and efficiency evolve, Seymour Reservoir #2 Dam remains a testament to the vital role of such structures in sustaining water resources for future generations.
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 Seymour Reservoir #2 Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Naugatuck River At Beacon Falls | 814 cfs | → |
| Housatonic River At Stevenson | 495 cfs | → |
| Pomperaug River At Southbury | 121 cfs | → |
| Mill R Nr Hamden | 54 cfs | → |
| Pootatuck R At Sandy Hook | 43 cfs | → |
| Weekeepeemee River At Hotchkissville | 33 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Seymour Reservoir #2 Dam.
Boat launches
- Lake Housatonic
- Lake Zoar
- Main Street Hamden
- Huntington Street Shelton
- Sackett Point Road North Haven
- Lake Lillinonah (Pond Brook)
Campgrounds
Fishing spots
- Seymour Reservoir Number 2
- Reservoir Number 2
- Reservoir Number 1
- Seymour Reservoir Number 1
- Seymour Reservoir Number 4
- Carrington Pond
Paddle runs
- Begins Downstream Of The Borough Of Bantam, At Stoddard Road Bridge To The Confluence With The Shepaug River
- Pond Downstream Of Shepaug Reservoir Dam, Marked By Service Road Bridge To Ends In Backwaters Of Lake Lillinonah, Near Roxbury Falls
- Begins Below The Tailrace Of The Lower Collinsville Dam To The Route 187 Bridge
- The Confluence With The Nepaug River To A Point 0.2 Miles Below The Lower Collinsville Dam Tailrace
- Kent Bridge To Boardman Bridge
- New Hartford/Canton Town Line To The Confluence With The Nepaug River
Track Seymour Reservoir #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 Seymour Reservoir #2 Dam
Where does the data for Seymour Reservoir #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 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 Seymour Reservoir #2 Dam.