Beaver Kill at Cooks Falls

1. 21.10 ftFEMA flood insurance risk maps indicate that this stage corresponds to the 0.2% (500 year) flood level. Your property is at risk for flooding during a record flood event. A 500 year flood is a flood that has a 0.2 percent chance of occurring in any year. A flood of this magnitude has not occurred here since record keeping began.
2. 20.55 ftThis is the river stage corresponding to the June 2006 flood of record.
3. 18.98 ftThis is the crest of the April 2005 major flood which resulted in several million dollars of damage to over 100 buildings and six bridges.
4. 18.70 ftFEMA flood insurance risk maps indicate that this stage corresponds to the 1% (100 year) floodplain. Your property is at risk for flooding during a major event. A 100 year flood is a flood that has a 1 percent chance of occurring in any year. In the past, water has reached this level one time since record keeping began.
5. 18.00 ftThis is the major flood stage. Numerous properties and structures are flooded from Cooks Falls to East Branch.
6. 17.80 ftThis is the crest of the January 19, 1996 rapid snow melt and heavy rainfall flood.
7. 16.00 ftWater spreads across Cooks Falls Road from Cooks Falls to Butternut Grove. Properties and homes near the fire station are affected by flood waters. Chiloway Road in Horton is flooded out at this level.
8. 12.00 ftBetween 12 and 16 feet, recreation areas, campgrounds and some low lying properties along the river become flooded from Cooks Falls to East Branch.
9. 10.00 ftMinor flooding of lowland agricultural areas begins along the river.

Chance of flooding, September to November

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Most recent crests

• July 29, 2026: 13.77 ft
• August 10, 2024: 10.32 ft
• December 18, 2023: 11.51 ft
• April 8, 2022: 13.14 ft
• October 26, 2021: 13.78 ft
• August 5, 2020: 10.81 ft
• April 14, 2020: 10.75 ft
• November 1, 2019: 11.02 ft
• July 26, 2018: 11.39 ft
• October 30, 2017: 13.80 ft

• East Branch Delaware River at Downsville below Pepacton Dam
• East Branch Delaware River at Harvard
• East Branch Delaware River at Pepacton Reservoir
• Willowemoc Creek at Livingston Manor
• East Branch Delaware River at Fishs Eddy
• Delaware River at Lordville
• Callicoon Creek at Callicoon
• Delaware River at Callicoon

Forecasts by the Middle Atlantic River Forecast Center. Forecasts are issued routinely year-round. Gauge reading may be affected by ice. Forecast flows are unadjusted for ice.

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.