Annandale Dam dam
Annandale Dam
Annandale Dam, located in Annandale On Hudson, New York, was completed in 1846 and serves primarily for irrigation purposes. This concrete structure stands at a height of 11 feet and has a length of 142 feet, with a maximum storage capacity of 21 acre-feet. The dam is situated on the Saw Kill River and has a surface area of 3 acres, making it a vital resource for water management in the region.
Despite its historical significance, Annandale Dam is currently rated as having poor condition assessment and significant hazard potential. The dam is under state regulation and inspection by the New York State Department of Environmental Conservation, with a last inspection date in June 2020. The spillway of the dam is uncontrolled with a width of 120 feet, raising concerns about its ability to manage high water levels during extreme weather events and potential flooding risks.
With its moderate risk assessment and proximity to urban areas, Annandale Dam poses a critical challenge for local authorities in terms of maintenance and emergency preparedness. Water resource and climate enthusiasts are closely monitoring the situation to ensure the safety and sustainability of this important infrastructure in Dutchess County, New York.
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 Annandale Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Esopus Creek At Mount Marion Ny | 140 cfs | → |
| Rondout Creek At Rosendale Ny | 191 cfs | → |
| Little Beaver Kill @ Beechford Nr Mt Tremper Ny | 13 cfs | → |
| Esopus Creek At Coldbrook Ny | 736 cfs | → |
| Bush Kill Blw Maltby Hollow Bk At West Shokan Ny | 23 cfs | → |
| Woodland Creek Above Mouth At Phoenicia Ny | 25 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Annandale Dam.
Boat launches
- Ulster Landing Road 808, Town Of Ulster
- Kidd Lane Town Of Red Hook
- Hudson Street Town Of Saugerties
- Ny 199 Town Of Rhinebeck
- Charles Rider Park Road Town Of Ulster
- Tina Chorvas Water Front Park
Campgrounds
- Koa Camping
- Rip Van Winkle Camping
- Wilcox Memorial Park
- Lake Taghkanic State Park
- Margaret Norrie State Park
- North/South Lake - Dec
Fishing spots
Paddle runs
- Falls Mountain Road In Canaan, Connecticut To Kent Bridge
- The Massachusetts-Connecticut Border To Falls Mountain Road In Canaan, Connecticut
- Kent Bridge To Boardman Bridge
- Pond Downstream Of Shepaug Reservoir Dam, Marked By Service Road Bridge To Ends In Backwaters Of Lake Lillinonah, Near Roxbury Falls
- Begins Downstream Of The Borough Of Bantam, At Stoddard Road Bridge To The Confluence With The Shepaug River
- The Hartland Headwaters To The Confluence With The Salmon Brook Main Stem
Track Annandale 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 Annandale Dam
Where does the data for Annandale 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 Annandale Dam.