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Hydrograph River at a Glance Download
Esopus Creek at Ashokan Reservoir East Pool (ft)Highest Observation: 586.24 ft at 7:10PM May 21, 2020Highest Observation: 586.24 ft at 7:25PM May 21, 2020Observed: 586.23 ft at 7:45PM May 21, 2020Observed: 586.23 ft at 8:00PM May 21, 2020Observed: 586.23 ft at 8:15PM May 21, 2020Highest Observation: 586.24 ft at 8:30PM May 21, 2020Observed: 586.23 ft at 8:40PM May 21, 2020Highest Observation: 586.24 ft at 8:55PM May 21, 2020Observed: 586.23 ft at 9:10PM May 21, 2020Observed: 586.23 ft at 9:25PM May 21, 2020Observed: 586.23 ft at 9:45PM May 21, 2020Observed: 586.23 ft at 10:00PM May 21, 2020Observed: 586.23 ft at 10:15PM May 21, 2020Observed: 586.23 ft at 10:30PM May 21, 2020Observed: 586.23 ft at 10:40PM May 21, 2020Observed: 586.23 ft at 10:55PM May 21, 2020Observed: 586.22 ft at 11:10PM May 21, 2020Observed: 586.23 ft at 11:25PM May 21, 2020Observed: 586.22 ft at 11:45PM May 21, 2020Observed: 586.22 ft at 11:50PM May 21, 2020Observed: 586.22 ft at 2:00AM May 22, 2020Observed: 586.22 ft at 2:15AM May 22, 2020Observed: 586.22 ft at 2:30AM May 22, 2020Observed: 586.22 ft at 2:40AM May 22, 2020Observed: 586.22 ft at 2:55AM May 22, 2020Observed: 586.22 ft at 3:10AM May 22, 2020Observed: 586.22 ft at 3:25AM May 22, 2020Observed: 586.23 ft at 3:45AM May 22, 2020Observed: 586.22 ft at 4:00AM May 22, 2020Observed: 586.22 ft at 4:15AM May 22, 2020Observed: 586.22 ft at 4:30AM May 22, 2020Observed: 586.22 ft at 6:00AM May 22, 2020Observed: 586.21 ft at 6:15AM May 22, 2020Observed: 586.22 ft at 6:30AM May 22, 2020Observed: 586.22 ft at 6:40AM May 22, 2020Observed: 586.22 ft at 6:55AM May 22, 2020Observed: 586.22 ft at 7:10AM May 22, 2020Observed: 586.21 ft at 7:25AM May 22, 2020Observed: 586.21 ft at 7:45AM May 22, 2020Observed: 586.21 ft at 8:00AM May 22, 2020Observed: 586.21 ft at 8:15AM May 22, 2020Observed: 586.22 ft at 8:30AM May 22, 2020Observed: 586.22 ft at 8:40AM May 22, 2020Observed: 586.2 ft at 8:55AM May 22, 2020Observed: 586.22 ft at 9:10AM May 22, 2020Observed: 586.2 ft at 9:25AM May 22, 2020Observed: 586.22 ft at 9:45AM May 22, 2020Observed: 586.21 ft at 10:00AM May 22, 2020Observed: 586.22 ft at 10:15AM May 22, 2020Observed: 586.2 ft at 10:30AM May 22, 2020Observed: 586.21 ft at 12:00PM May 22, 2020Observed: 586.22 ft at 12:15PM May 22, 2020Observed: 586.21 ft at 12:30PM May 22, 2020Observed: 586.2 ft at 12:40PM May 22, 2020Observed: 586.22 ft at 12:55PM May 22, 2020Observed: 586.2 ft at 1:10PM May 22, 2020Observed: 586.22 ft at 1:25PM May 22, 2020Observed: 586.2 ft at 1:45PM May 22, 2020Observed: 586.21 ft at 2:00PM May 22, 2020Observed: 586.2 ft at 2:15PM May 22, 2020Observed: 586.21 ft at 2:30PM May 22, 2020Observed: 586.2 ft at 2:40PM May 22, 2020Observed: 586.21 ft at 2:55PM May 22, 2020Observed: 586.2 ft at 3:10PM May 22, 2020Observed: 586.21 ft at 3:25PM May 22, 2020Observed: 586.2 ft at 3:45PM May 22, 2020Observed: 586.22 ft at 4:00PM May 22, 2020Observed: 586.19 ft at 4:15PM May 22, 2020Observed: 586.21 ft at 4:30PM May 22, 2020Observed: 586.21 ft at 4:40PM May 22, 2020Observed: 586.2 ft at 4:55PM May 22, 2020Observed: 586.21 ft at 5:10PM May 22, 2020Observed: 586.19 ft at 5:25PM May 22, 2020Observed: 586.2 ft at 5:45PM May 22, 2020Observed: 586.2 ft at 6:00PM May 22, 2020Observed: 586.2 ft at 6:15PM May 22, 2020Observed: 586.18 ft at 6:30PM May 22, 2020Observed: 586.21 ft at 6:40PM May 22, 2020Observed: 586.18 ft at 6:55PM May 22, 2020Observed: 586.21 ft at 7:10PM May 22, 2020Observed: 586.18 ft at 7:25PM May 22, 2020Observed: 586.19 ft at 8:55PM May 22, 2020Observed: 586.2 ft at 9:10PM May 22, 2020Observed: 586.2 ft at 9:25PM May 22, 2020Observed: 586.21 ft at 9:45PM May 22, 2020Observed: 586.19 ft at 10:00PM May 22, 2020Observed: 586.21 ft at 10:15PM May 22, 2020Observed: 586.19 ft at 10:30PM May 22, 2020Observed: 586.21 ft at 11:50PM May 22, 2020Observed: 586.18 ft at 2:55AM May 23, 2020Observed: 586.2 ft at 3:10AM May 23, 2020Observed: 586.18 ft at 3:25AM May 23, 2020Observed: 586.2 ft at 3:45AM May 23, 2020Observed: 586.19 ft at 4:00AM May 23, 2020Observed: 586.2 ft at 4:15AM May 23, 2020Observed: 586.18 ft at 4:30AM May 23, 2020Observed: 586.19 ft at 6:00AM May 23, 2020Observed: 586.2 ft at 6:15AM May 23, 2020Observed: 586.19 ft at 6:30AM May 23, 2020Observed: 586.19 ft at 6:40AM May 23, 2020Observed: 586.2 ft at 6:55AM May 23, 2020Observed: 586.18 ft at 7:10AM May 23, 2020Observed: 586.2 ft at 7:25AM May 23, 2020Observed: 586.19 ft at 8:55AM May 23, 2020Observed: 586.19 ft at 9:10AM May 23, 2020Observed: 586.18 ft at 9:25AM May 23, 2020Observed: 586.18 ft at 10:00AM May 23, 2020Observed: 586.18 ft at 10:15AM May 23, 2020Observed: 586.18 ft at 10:30AM May 23, 2020Observed: 586.18 ft at 12:00PM May 23, 2020Observed: 586.2 ft at 12:15PM May 23, 2020Observed: 586.19 ft at 12:30PM May 23, 2020Observed: 586.19 ft at 12:40PM May 23, 2020Observed: 586.18 ft at 12:55PM May 23, 2020Observed: 586.19 ft at 1:10PM May 23, 2020Observed: 586.19 ft at 1:25PM May 23, 2020Observed: 586.18 ft at 1:45PM May 23, 2020Observed: 586.18 ft at 2:00PM May 23, 2020Observed: 586.18 ft at 2:15PM May 23, 2020Observed: 586.18 ft at 2:30PM May 23, 2020Observed: 586.18 ft at 2:40PM May 23, 2020Observed: 586.17 ft at 2:55PM May 23, 2020Observed: 586.18 ft at 3:10PM May 23, 2020Observed: 586.18 ft at 3:25PM May 23, 2020Observed: 586.19 ft at 3:45PM May 23, 2020Observed: 586.18 ft at 4:00PM May 23, 2020Observed: 586.2 ft at 4:15PM May 23, 2020Observed: 586.17 ft at 4:30PM May 23, 2020Observed: 586.19 ft at 4:40PM May 23, 2020Observed: 586.18 ft at 4:55PM May 23, 2020Observed: 586.19 ft at 5:10PM May 23, 2020Observed: 586.19 ft at 5:25PM May 23, 2020Observed: 586.2 ft at 5:45PM May 23, 2020Observed: 586.17 ft at 6:00PM May 23, 2020Observed: 586.2 ft at 6:15PM May 23, 2020Observed: 586.17 ft at 6:30PM May 23, 2020Observed: 586.16 ft at 6:40PM May 23, 2020Observed: 586.2 ft at 6:55PM May 23, 2020Observed: 586.16 ft at 7:10PM May 23, 2020Observed: 586.21 ft at 7:25PM May 23, 2020Observed: 586.17 ft at 7:45PM May 23, 2020Observed: 586.2 ft at 8:00PM May 23, 2020Observed: 586.17 ft at 8:15PM May 23, 2020Observed: 586.19 ft at 8:30PM May 23, 2020Observed: 586.17 ft at 8:40PM May 23, 2020Observed: 586.19 ft at 8:55PM May 23, 2020Observed: 586.17 ft at 9:10PM May 23, 2020Observed: 586.18 ft at 9:25PM May 23, 2020Observed: 586.17 ft at 9:45PM May 23, 2020Observed: 586.2 ft at 10:00PM May 23, 2020Observed: 586.17 ft at 10:15PM May 23, 2020Observed: 586.18 ft at 10:30PM May 23, 2020Observed: 586.19 ft at 10:40PM May 23, 2020Observed: 586.17 ft at 10:55PM May 23, 2020Observed: 586.19 ft at 11:10PM May 23, 2020Observed: 586.17 ft at 11:25PM May 23, 2020Observed: 586.18 ft at 11:45PM May 23, 2020Observed: 586.17 ft at 11:50PM May 23, 2020Observed: 586.17 ft at 2:00AM May 24, 2020Observed: 586.18 ft at 2:15AM May 24, 2020Observed: 586.17 ft at 2:30AM May 24, 2020Observed: 586.17 ft at 2:40AM May 24, 2020Observed: 586.18 ft at 2:55AM May 24, 2020Observed: 586.17 ft at 3:10AM May 24, 2020Observed: 586.18 ft at 3:25AM May 24, 2020Observed: 586.17 ft at 3:45AM May 24, 2020Observed: 586.18 ft at 4:00AM May 24, 2020Observed: 586.17 ft at 4:15AM May 24, 2020Observed: 586.18 ft at 4:30AM May 24, 2020Observed: 586.17 ft at 6:00AM May 24, 2020Observed: 586.17 ft at 6:15AM May 24, 2020Observed: 586.17 ft at 6:30AM May 24, 2020Observed: 586.17 ft at 10:30AM May 24, 2020Observed: 586.17 ft at 12:00PM May 24, 2020Observed: 586.16 ft at 12:15PM May 24, 2020Observed: 586.16 ft at 12:30PM May 24, 2020Observed: 586.16 ft at 12:40PM May 24, 2020Observed: 586.16 ft at 12:55PM May 24, 2020Observed: 586.16 ft at 1:10PM May 24, 2020Observed: 586.16 ft at 1:25PM May 24, 2020Observed: 586.16 ft at 1:45PM May 24, 2020Observed: 586.17 ft at 2:00PM May 24, 2020Observed: 586.16 ft at 2:15PM May 24, 2020Observed: 586.16 ft at 2:30PM May 24, 2020Observed: 586.16 ft at 2:40PM May 24, 2020Observed: 586.16 ft at 2:55PM May 24, 2020Observed: 586.16 ft at 3:10PM May 24, 2020Observed: 586.16 ft at 3:25PM May 24, 2020Observed: 586.16 ft at 3:45PM May 24, 2020Observed: 586.16 ft at 4:00PM May 24, 2020Observed: 586.16 ft at 4:15PM May 24, 2020Observed: 586.16 ft at 4:30PM May 24, 2020Observed: 586.16 ft at 4:40PM May 24, 2020Observed: 586.16 ft at 4:55PM May 24, 2020Observed: 586.16 ft at 5:10PM May 24, 2020Observed: 586.16 ft at 5:25PM May 24, 2020Observed: 586.16 ft at 5:45PM May 24, 2020Observed: 586.16 ft at 6:00PM May 24, 2020Observed: 586.16 ft at 6:15PM May 24, 2020Highest Forecast: 586.2 ft 8:00PM May 24, 2020Forecast: 586.1 ft 2:00AM May 25, 2020Forecast: 586.1 ft 8:00AM May 25, 2020Forecast: 586.1 ft 2:00PM May 25, 2020Forecast: 586.1 ft 8:00PM May 25, 2020Forecast: 586.1 ft 2:00AM May 26, 2020Forecast: 586.1 ft 8:00AM May 26, 2020Forecast: 586 ft 2:00PM May 26, 2020Forecast: 586 ft 8:00PM May 26, 2020Forecast: 586 ft 2:00AM May 27, 2020Forecast: 586 ft 8:00AM May 27, 2020ASEN6(plotting HPIRZ) Graph Created (7:00PM May 24, 2020)ObservedForecast (issued 11:08AM May 24)Latest observed value: 586.16 ft at 6:15 PM EDT 24-May-2020. Flood Stage is 589 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: The data are from automated sensors and are courtesy of the New York City Department of Environmental Protection. They are provisional and subject to change.

Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the Esopus Creek at Ashokan Reservoir East are issued routinely year-round.

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Upstream Gauge - at Cold Brook Upstream Gauge Downstream Gauge Downstream Gauge - at Mount Marion
Flood Categories (in feet)
Major Flood Stage: 591
Moderate Flood Stage: 590
Flood Stage: 589
Action Stage: 587.1
Low Stage (in feet): -9999

Historic Crests
(1) 592.23 ft on 03/31/1951
(2) 591.38 ft on 04/03/2005
(3) 590.90 ft on 04/05/1987
(4) 590.58 ft on 08/29/2011
(5) 589.92 ft on 04/17/2007
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 589.56 ft on 09/08/2011
(2) 590.58 ft on 08/29/2011
(3) 589.39 ft on 03/23/2010
(4) 589.92 ft on 04/17/2007
(5) 591.38 ft on 04/03/2005
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 525.91 ft on 10/24/1926
(2) 532.64 ft on 02/20/1981
(3) 536.86 ft on 10/09/1985
(4) 539.28 ft on 04/12/1989
(5) 540.91 ft on 12/21/1993
Show More Low Water Records
Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
587.1 Reservoir at spillway level and begins to overflow into the Esopus Creek downstream. Downstream flooding is reference to the Mount Marion gage MRNN6.
586.5 This basin is nearly full and only 0.25 inch runoff is needed to start spilling over into the Esopus Creek downstream.
585.79 This basin has capacity for only about 0.50 inch of runoff before it will overflow into the Esopus Creek downstream.
585.1 This basin has capacity for only about 0.75 inch of runoff. It is getting close to full.
584.4 This basin has capacity for only about 1.0 inch of runoff.
583.1 This basin has capacity for about 1.5 inches of runoff.
581.6 This basin has capacity for about 2.0 inches of runoff.
580.29 This basin has capacity for about 2.5 inches of runoff.
578.79 This basin has capacity for about 3.0 inches of runoff.
576 This basin has capacity for about 4.0 inches of runoff.
573 This basin has capacity for about 5.0 inches of runoff.
570 This basin has capacity for about 6.0 inches of runoff.
About This Location Collapse

Latitude: 41.950278° N, Longitude: 74.208333° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 589 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 0 ft 589 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 7 Day (NAEFS) 7 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Click individual graphics to enlarge.

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Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
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251 Fuller Road Suite B300
Albany, NY 12203-3650
(518) 435-9580
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Page last modified: 1-Mar-2019 12:35 AM
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