Deep River (IN) near Merrillville, IN
River level and flood forecast · Lake County
Normal3.4 ftas of Mon 2:15 PM
The river is 5.1 ft below flood stage (8.5 ft).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 13.5 ft |
| Moderate flood stage | 10.5 ft |
| Flood stage | 8.5 ft |
| Action stage | 7.5 ft |
| Record crest (February 21, 2018) | 11.8 ft |
What floods at each level
From the National Weather Service, highest first.
- 14.5 ftAinsworth Road threatened near Hobart.
- 13.5 ftUS-30 threatened in Merrillville.
- 13 ftLincoln Highway threatened near Merrillville.
- 12.5 ftGrand Boulevard threatened near Merrillville.
- 12 ftLake Park Avenue (IN-51) threatened near Hobart. Clay Street threatened near Merrillville.
- 11.5 ft101st Avenue threatened south of Merrillville. 61st Avenue threatened in Hobart.
- 11 ftA 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 ftLow-lying portions of Indian Ridge Golf Course inundated near Hobart.
- 8.5 ftParking lots threatened at Deep River County Park.
- 8 ftLow-lying agricultural land is inundated in and near Merrillville.
- 6 ftLow-lying forest land threatened in and near Merrillville.
Highest crests on record
- 11.8 ft — February 21, 2018
- 11.36 ft — May 1, 2019
- 11.21 ft — September 28, 2019
- 11.09 ft — May 24, 2020
- 11.08 ft — January 11, 2020
Recent crests: 9.89 ft (May 9, 2021) · 11.09 ft (May 24, 2020) · 11.07 ft (May 15, 2020) · 10.73 ft (April 30, 2020) · 11.08 ft (January 11, 2020)
Up and down the river, and nearby
- DownstreamDeep River (IN) at Hobart, IN
- Turkey Creek (IN) at Merrillville, IN
- Deep River (IN) at Liverpool, IN
- Little Calumet River near Lake Station, IN
- Little Calumet River at Gary (Grant St), IN
- Turkey Creek (IN) at Schererville, IN
- Salt Creek (IN) at Valparaiso, IN
- Little Calumet River at Gary (Burr Street), IN
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (MDRI3); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.