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Hydrograph River at a Glance Download
Deep River (IN) near Merrillville Stage (ft)Observed: 3.02 ft at 3:15PM Oct 01, 2023Observed: 3.01 ft at 3:30PM Oct 01, 2023Observed: 3.01 ft at 3:45PM Oct 01, 2023Observed: 3.01 ft at 4:00PM Oct 01, 2023Observed: 3 ft at 4:15PM Oct 01, 2023Observed: 3 ft at 4:30PM Oct 01, 2023Observed: 3 ft at 4:45PM Oct 01, 2023Observed: 3 ft at 5:00PM Oct 01, 2023Observed: 2.99 ft at 5:15PM Oct 01, 2023Observed: 2.99 ft at 5:30PM Oct 01, 2023Observed: 2.98 ft at 5:45PM Oct 01, 2023Observed: 2.98 ft at 6:00PM Oct 01, 2023Observed: 2.98 ft at 6:15PM Oct 01, 2023Observed: 2.98 ft at 6:30PM Oct 01, 2023Observed: 2.97 ft at 6:45PM Oct 01, 2023Observed: 2.97 ft at 7:00PM Oct 01, 2023Observed: 2.97 ft at 7:15PM Oct 01, 2023Observed: 2.96 ft at 7:30PM Oct 01, 2023Observed: 2.96 ft at 7:45PM Oct 01, 2023Observed: 2.96 ft at 8:00PM Oct 01, 2023Observed: 2.96 ft at 8:15PM Oct 01, 2023Observed: 2.96 ft at 8:30PM Oct 01, 2023Observed: 2.96 ft at 8:45PM Oct 01, 2023Observed: 2.95 ft at 9:00PM Oct 01, 2023Observed: 2.95 ft at 9:15PM Oct 01, 2023Observed: 2.95 ft at 9:30PM Oct 01, 2023Observed: 2.95 ft at 9:45PM Oct 01, 2023Observed: 2.95 ft at 10:00PM Oct 01, 2023Observed: 2.95 ft at 10:15PM Oct 01, 2023Observed: 2.95 ft at 10:30PM Oct 01, 2023Observed: 2.94 ft at 10:45PM Oct 01, 2023Observed: 2.94 ft at 11:00PM Oct 01, 2023Observed: 2.94 ft at 11:15PM Oct 01, 2023Observed: 2.94 ft at 11:30PM Oct 01, 2023Observed: 2.95 ft at 11:45PM Oct 01, 2023Observed: 2.95 ft at 12:00AM Oct 02, 2023Observed: 2.95 ft at 12:15AM Oct 02, 2023Observed: 2.96 ft at 12:30AM Oct 02, 2023Observed: 2.96 ft at 12:45AM Oct 02, 2023Observed: 2.97 ft at 1:00AM Oct 02, 2023Observed: 2.98 ft at 1:15AM Oct 02, 2023Observed: 2.98 ft at 1:30AM Oct 02, 2023Observed: 2.99 ft at 1:45AM Oct 02, 2023Observed: 3 ft at 2:00AM Oct 02, 2023Observed: 3.01 ft at 2:15AM Oct 02, 2023Observed: 3.01 ft at 2:30AM Oct 02, 2023Observed: 3.02 ft at 2:45AM Oct 02, 2023Observed: 3.02 ft at 3:00AM Oct 02, 2023Observed: 3.03 ft at 3:15AM Oct 02, 2023Observed: 3.04 ft at 3:30AM Oct 02, 2023Observed: 3.04 ft at 3:45AM Oct 02, 2023Observed: 3.05 ft at 4:00AM Oct 02, 2023Observed: 3.05 ft at 4:15AM Oct 02, 2023Observed: 3.05 ft at 4:30AM Oct 02, 2023Observed: 3.05 ft at 4:45AM Oct 02, 2023Observed: 3.05 ft at 5:00AM Oct 02, 2023Observed: 3.06 ft at 5:15AM Oct 02, 2023Observed: 3.06 ft at 5:30AM Oct 02, 2023Observed: 3.06 ft at 5:45AM Oct 02, 2023Observed: 3.06 ft at 6:00AM Oct 02, 2023Observed: 3.06 ft at 6:15AM Oct 02, 2023Observed: 3.06 ft at 6:30AM Oct 02, 2023Observed: 3.05 ft at 6:45AM Oct 02, 2023Observed: 3.05 ft at 7:00AM Oct 02, 2023Observed: 3.05 ft at 7:15AM Oct 02, 2023Observed: 3.05 ft at 7:30AM Oct 02, 2023Observed: 3.06 ft at 7:45AM Oct 02, 2023Observed: 3.05 ft at 8:00AM Oct 02, 2023Observed: 3.05 ft at 8:15AM Oct 02, 2023Observed: 3.06 ft at 8:30AM Oct 02, 2023Observed: 3.05 ft at 8:45AM Oct 02, 2023Observed: 3.06 ft at 9:00AM Oct 02, 2023Observed: 3.06 ft at 9:15AM Oct 02, 2023Observed: 3.06 ft at 9:30AM Oct 02, 2023Observed: 3.06 ft at 9:45AM Oct 02, 2023Observed: 3.06 ft at 10:00AM Oct 02, 2023Observed: 3.06 ft at 10:15AM Oct 02, 2023Observed: 3.06 ft at 10:30AM Oct 02, 2023Observed: 3.06 ft at 10:45AM Oct 02, 2023Observed: 3.06 ft at 11:00AM Oct 02, 2023Observed: 3.06 ft at 11:15AM Oct 02, 2023Observed: 3.06 ft at 11:30AM Oct 02, 2023Observed: 3.06 ft at 11:45AM Oct 02, 2023Observed: 3.06 ft at 12:00PM Oct 02, 2023Observed: 3.06 ft at 12:15PM Oct 02, 2023Observed: 3.06 ft at 12:30PM Oct 02, 2023Observed: 3.06 ft at 12:45PM Oct 02, 2023Observed: 3.06 ft at 1:00PM Oct 02, 2023Observed: 3.06 ft at 1:15PM Oct 02, 2023Observed: 3.06 ft at 1:30PM Oct 02, 2023Observed: 3.05 ft at 1:45PM Oct 02, 2023Observed: 3.05 ft at 2:00PM Oct 02, 2023Observed: 3.05 ft at 2:15PM Oct 02, 2023Observed: 3.05 ft at 2:30PM Oct 02, 2023Observed: 3.04 ft at 2:45PM Oct 02, 2023Observed: 3.04 ft at 3:00PM Oct 02, 2023Observed: 3.04 ft at 3:15PM Oct 02, 2023Observed: 3.03 ft at 3:30PM Oct 02, 2023Observed: 3.03 ft at 3:45PM Oct 02, 2023Observed: 3.03 ft at 4:00PM Oct 02, 2023Observed: 3.02 ft at 4:15PM Oct 02, 2023Observed: 3.02 ft at 4:30PM Oct 02, 2023Observed: 3.02 ft at 4:45PM Oct 02, 2023Observed: 3.02 ft at 5:00PM Oct 02, 2023Observed: 3.01 ft at 5:15PM Oct 02, 2023Observed: 3.01 ft at 5:30PM Oct 02, 2023Observed: 3 ft at 5:45PM Oct 02, 2023Observed: 3 ft at 6:00PM Oct 02, 2023Observed: 3 ft at 6:15PM Oct 02, 2023Observed: 2.99 ft at 6:30PM Oct 02, 2023Observed: 2.99 ft at 6:45PM Oct 02, 2023Observed: 2.99 ft at 7:00PM Oct 02, 2023Observed: 2.98 ft at 7:15PM Oct 02, 2023Observed: 2.98 ft at 7:30PM Oct 02, 2023Observed: 2.98 ft at 7:45PM Oct 02, 2023Observed: 2.98 ft at 8:00PM Oct 02, 2023Observed: 2.97 ft at 8:15PM Oct 02, 2023Observed: 2.97 ft at 8:30PM Oct 02, 2023Observed: 2.97 ft at 8:45PM Oct 02, 2023Observed: 2.97 ft at 9:00PM Oct 02, 2023Observed: 2.96 ft at 9:15PM Oct 02, 2023Observed: 2.96 ft at 9:30PM Oct 02, 2023Observed: 2.96 ft at 9:45PM Oct 02, 2023Observed: 2.96 ft at 10:00PM Oct 02, 2023Observed: 2.95 ft at 10:15PM Oct 02, 2023Observed: 2.95 ft at 10:30PM Oct 02, 2023Observed: 2.95 ft at 10:45PM Oct 02, 2023Observed: 2.96 ft at 11:00PM Oct 02, 2023Observed: 2.96 ft at 11:15PM Oct 02, 2023Observed: 2.96 ft at 11:30PM Oct 02, 2023Observed: 2.96 ft at 11:45PM Oct 02, 2023Observed: 2.97 ft at 12:00AM Oct 03, 2023Observed: 2.97 ft at 12:15AM Oct 03, 2023Observed: 2.98 ft at 12:30AM Oct 03, 2023Observed: 2.98 ft at 12:45AM Oct 03, 2023Observed: 2.99 ft at 1:00AM Oct 03, 2023Observed: 2.99 ft at 1:15AM Oct 03, 2023Observed: 3 ft at 1:30AM Oct 03, 2023Observed: 3 ft at 1:45AM Oct 03, 2023Observed: 3 ft at 2:00AM Oct 03, 2023Observed: 3.01 ft at 2:15AM Oct 03, 2023Observed: 3.01 ft at 2:30AM Oct 03, 2023Observed: 3.02 ft at 2:45AM Oct 03, 2023Observed: 3.02 ft at 3:00AM Oct 03, 2023Observed: 3.03 ft at 3:15AM Oct 03, 2023Observed: 3.03 ft at 3:30AM Oct 03, 2023Observed: 3.03 ft at 3:45AM Oct 03, 2023Observed: 3.04 ft at 4:00AM Oct 03, 2023Observed: 3.04 ft at 4:15AM Oct 03, 2023Observed: 3.04 ft at 4:30AM Oct 03, 2023Observed: 3.04 ft at 4:45AM Oct 03, 2023Observed: 3.04 ft at 5:00AM Oct 03, 2023Observed: 3.04 ft at 5:15AM Oct 03, 2023Observed: 3.04 ft at 5:30AM Oct 03, 2023Observed: 3.04 ft at 5:45AM Oct 03, 2023Observed: 3.04 ft at 6:00AM Oct 03, 2023Observed: 3.04 ft at 6:15AM Oct 03, 2023Observed: 3.04 ft at 6:30AM Oct 03, 2023Observed: 3.04 ft at 6:45AM Oct 03, 2023Observed: 3.04 ft at 7:00AM Oct 03, 2023Observed: 3.05 ft at 7:15AM Oct 03, 2023Observed: 3.05 ft at 7:30AM Oct 03, 2023Observed: 3.05 ft at 7:45AM Oct 03, 2023Observed: 3.05 ft at 8:00AM Oct 03, 2023Observed: 3.05 ft at 8:15AM Oct 03, 2023Observed: 3.06 ft at 8:30AM Oct 03, 2023Observed: 3.06 ft at 8:45AM Oct 03, 2023Observed: 3.06 ft at 9:00AM Oct 03, 2023Observed: 3.06 ft at 9:15AM Oct 03, 2023Observed: 3.06 ft at 9:30AM Oct 03, 2023Observed: 3.06 ft at 9:45AM Oct 03, 2023Observed: 3.06 ft at 10:00AM Oct 03, 2023Observed: 3.06 ft at 10:15AM Oct 03, 2023Observed: 3.07 ft at 10:30AM Oct 03, 2023Observed: 3.07 ft at 10:45AM Oct 03, 2023Observed: 3.07 ft at 11:00AM Oct 03, 2023Observed: 3.07 ft at 11:15AM Oct 03, 2023Observed: 3.06 ft at 11:30AM Oct 03, 2023Observed: 3.06 ft at 11:45AM Oct 03, 2023Observed: 3.06 ft at 12:00PM Oct 03, 2023Observed: 3.06 ft at 12:15PM Oct 03, 2023Observed: 3.06 ft at 12:30PM Oct 03, 2023Observed: 3.06 ft at 12:45PM Oct 03, 2023Observed: 3.06 ft at 1:00PM Oct 03, 2023Observed: 3.06 ft at 1:15PM Oct 03, 2023Observed: 3.06 ft at 1:30PM Oct 03, 2023Observed: 3.06 ft at 1:45PM Oct 03, 2023Observed: 3.06 ft at 2:00PM Oct 03, 2023Observed: 3.05 ft at 2:15PM Oct 03, 2023Observed: 3.05 ft at 2:30PM Oct 03, 2023Observed: 3.05 ft at 2:45PM Oct 03, 2023Observed: 3.05 ft at 3:00PM Oct 03, 2023Observed: 3.05 ft at 3:15PM Oct 03, 2023Observed: 3.04 ft at 3:30PM Oct 03, 2023Observed: 3.04 ft at 3:45PM Oct 03, 2023Observed: 3.04 ft at 4:00PM Oct 03, 2023Observed: 3.04 ft at 4:15PM Oct 03, 2023Observed: 3.03 ft at 4:30PM Oct 03, 2023Observed: 3.03 ft at 4:45PM Oct 03, 2023Observed: 3.03 ft at 5:00PM Oct 03, 2023Observed: 3.03 ft at 5:15PM Oct 03, 2023Observed: 3.02 ft at 5:30PM Oct 03, 2023Observed: 3.02 ft at 5:45PM Oct 03, 2023Observed: 3.01 ft at 6:00PM Oct 03, 2023Observed: 3.01 ft at 6:15PM Oct 03, 2023Observed: 3.01 ft at 6:30PM Oct 03, 2023Observed: 3 ft at 6:45PM Oct 03, 2023Observed: 3 ft at 7:00PM Oct 03, 2023Observed: 2.99 ft at 7:15PM Oct 03, 2023Observed: 2.99 ft at 7:30PM Oct 03, 2023Observed: 2.99 ft at 7:45PM Oct 03, 2023Observed: 2.99 ft at 8:00PM Oct 03, 2023Observed: 2.98 ft at 8:15PM Oct 03, 2023Observed: 2.98 ft at 8:30PM Oct 03, 2023Observed: 2.98 ft at 8:45PM Oct 03, 2023Observed: 2.97 ft at 9:00PM Oct 03, 2023Observed: 2.97 ft at 9:15PM Oct 03, 2023Observed: 2.97 ft at 9:30PM Oct 03, 2023Observed: 2.97 ft at 9:45PM Oct 03, 2023Observed: 2.97 ft at 10:00PM Oct 03, 2023Observed: 2.97 ft at 10:15PM Oct 03, 2023Observed: 2.97 ft at 10:30PM Oct 03, 2023Observed: 2.97 ft at 10:45PM Oct 03, 2023Observed: 2.97 ft at 11:00PM Oct 03, 2023Observed: 2.97 ft at 11:15PM Oct 03, 2023Observed: 2.97 ft at 11:30PM Oct 03, 2023Observed: 2.98 ft at 11:45PM Oct 03, 2023Observed: 2.98 ft at 12:00AM Oct 04, 2023Observed: 2.99 ft at 12:15AM Oct 04, 2023Observed: 3 ft at 12:30AM Oct 04, 2023Observed: 3 ft at 12:45AM Oct 04, 2023Observed: 3 ft at 1:00AM Oct 04, 2023Observed: 3.01 ft at 1:15AM Oct 04, 2023Observed: 3.02 ft at 1:30AM Oct 04, 2023Observed: 3.02 ft at 1:45AM Oct 04, 2023Observed: 3.03 ft at 2:00AM Oct 04, 2023Observed: 3.03 ft at 2:15AM Oct 04, 2023Observed: 3.04 ft at 2:30AM Oct 04, 2023Observed: 3.04 ft at 2:45AM Oct 04, 2023Observed: 3.05 ft at 3:00AM Oct 04, 2023Observed: 3.05 ft at 3:15AM Oct 04, 2023Observed: 3.06 ft at 3:30AM Oct 04, 2023Observed: 3.06 ft at 3:45AM Oct 04, 2023Observed: 3.06 ft at 4:00AM Oct 04, 2023Observed: 3.07 ft at 4:15AM Oct 04, 2023Observed: 3.07 ft at 4:30AM Oct 04, 2023Observed: 3.07 ft at 4:45AM Oct 04, 2023Observed: 3.07 ft at 5:00AM Oct 04, 2023Observed: 3.07 ft at 5:15AM Oct 04, 2023Observed: 3.07 ft at 5:30AM Oct 04, 2023Observed: 3.07 ft at 5:45AM Oct 04, 2023Observed: 3.08 ft at 6:00AM Oct 04, 2023Observed: 3.08 ft at 6:15AM Oct 04, 2023Observed: 3.08 ft at 6:30AM Oct 04, 2023Observed: 3.08 ft at 6:45AM Oct 04, 2023Observed: 3.08 ft at 7:00AM Oct 04, 2023Observed: 3.08 ft at 7:15AM Oct 04, 2023Observed: 3.08 ft at 7:30AM Oct 04, 2023Observed: 3.08 ft at 7:45AM Oct 04, 2023Observed: 3.08 ft at 8:00AM Oct 04, 2023Observed: 3.08 ft at 8:15AM Oct 04, 2023Observed: 3.08 ft at 8:30AM Oct 04, 2023Observed: 3.08 ft at 8:45AM Oct 04, 2023Observed: 3.08 ft at 9:00AM Oct 04, 2023Observed: 3.08 ft at 9:15AM Oct 04, 2023Observed: 3.09 ft at 9:30AM Oct 04, 2023Observed: 3.09 ft at 9:45AM Oct 04, 2023Observed: 3.09 ft at 10:00AM Oct 04, 2023Observed: 3.09 ft at 10:15AM Oct 04, 2023Observed: 3.09 ft at 10:30AM Oct 04, 2023Observed: 3.09 ft at 10:45AM Oct 04, 2023Observed: 3.09 ft at 11:00AM Oct 04, 2023Observed: 3.09 ft at 11:15AM Oct 04, 2023Observed: 3.09 ft at 11:30AM Oct 04, 2023Observed: 3.09 ft at 11:45AM Oct 04, 2023Highest Observation: 3.1 ft at 12:00PM Oct 04, 2023Highest Observation: 3.1 ft at 12:15PM Oct 04, 2023Highest Observation: 3.1 ft at 12:30PM Oct 04, 2023Highest Observation: 3.1 ft at 12:45PM Oct 04, 2023Highest Observation: 3.1 ft at 1:00PM Oct 04, 2023Highest Observation: 3.1 ft at 1:15PM Oct 04, 2023Highest Observation: 3.1 ft at 1:30PM Oct 04, 2023Highest Observation: 3.1 ft at 1:45PM Oct 04, 2023Observed: 3.09 ft at 2:00PM Oct 04, 2023Observed: 3.09 ft at 2:15PM Oct 04, 2023USGS--Water Resources of the United StatesMDRI3(plotting HGIRG) Graph Created (3:10PM Oct 4, 2023)ObservedLatest observed value: 3.09 ft at 2:15 PM CDT 4-Oct-2023. Flood Stage is 8.5 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Graphical forecasts are not available for the Deep River (IN) near Merrillville. During times of high water, forecast crest information can be found in the text products.
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Downstream Gauge Downstream Gauge - at Hobart
Flood Categories (in feet)
Major Flood Stage: 13.5
Moderate Flood Stage: 10.5
Flood Stage: 8.5
Action Stage: 7.5
Low Stage (in feet): 2.5

Historic Crests
(1) 11.80 ft on 02/21/2018
(2) 11.36 ft on 05/01/2019
(3) 11.21 ft on 09/28/2019
(4) 11.09 ft on 05/24/2020
(5) 11.08 ft on 01/11/2020
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 9.89 ft on 05/09/2021
(2) 11.09 ft on 05/24/2020
(3) 11.07 ft on 05/15/2020
(4) 10.73 ft on 04/30/2020
(5) 11.08 ft on 01/11/2020
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.94 ft on 09/24/2020
(2) 3.11 ft on 08/08/2019
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
14.5 Ainsworth Road threatened near Hobart.
13.5 US-30 threatened in Merrillville.
13 Lincoln Highway threatened near Merrillville.
12.5 Grand Boulevard threatened near Merrillville.
12 Lake Park Avenue (IN-51) threatened near Hobart. Clay Street threatened near Merrillville.
11.5 101st Avenue threatened south of Merrillville. 61st Avenue threatened in Hobart.
11 A few residential structures threatened along Colorado Street near Merrillville. Residential structure threatened along 61st Street in Merrillville. Colorado Street is threatened. Residential property threatened along Lake Park Avenue (IN-59) near Hobart.
10.5 Low-lying portions of Indian Ridge Golf Course inundated near Hobart.
8.5 Parking lots threatened at Deep River County Park.
8 Low-lying agricultural land is inundated in and near Merrillville.
6 Low-lying forest land threatened in and near Merrillville.
Low Water Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
2.5 River nears zero flow.
About This Location Collapse

Latitude: 41.452400° N, Longitude: 87.258300° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 8.5 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 649.53 Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:
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Hydrologic Resources Additional Resources
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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
National Weather Service
Chicago Weather Forecast Office
333 W. University Dr.
Romeoville, IL 60446
(815) 834-1435
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