Input stage conditions:

Neosho River
Grand Lake
  1. 2
  2. 26
2 feet
  1. 743.6
  2. 753.6
743.6 feet

USGS gaging stations (clickable) [data]
Lidar land-surface elevation (NAVD88)
OWRB lake-bottom elevation (NGVD29) [data]
Streams [data]
Model cross sections (clickable)
FEMA 100-year flood zone
Neosho River inundation areas
Grand Lake inundation areas
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Map extent and scale:


Neosho River near Commerce, OK
Stage, in feet above arbitrary gage datum

Click on the hydrograph to display the nearest-matching model scenario in the map

NWS Neosho River Flood Categories (in feet):
Major Flood Stage:24
Moderate Flood Stage:18
Flood Stage:15
Action Stage:14

Current stage at Pensacola Dam on Grand Lake: 742.0 feet PD (743.4 NAVD88) at 2020-10-20 23:00 CDT

The U.S. Army Corps of Engineers maintains current and historic data on lake stage and storage at Grand Lake O' the Cherokees.

The target managed lake elevation is dependent on the time of year. [more]