Header

Main Content

Article

Monthly Water Resource Summary

June, 2020

Precipitation

For June 2020, Indiana's precipitation was below normal, with average temperature above normal. The statewide monthly precipitation average was 77.6 percent of normal. The overall monthly temperature average for Indiana was 72.6 degrees Fahrenheit or 2.1 degrees above normal.

Eight of the nine climate divisions received near to below normal precipitation for the month of June. Climate Division 7 (SW) received the highest (101.7) percentage of normal precipitation for the month, while Climate Division 3 (NE) received the lowest (57.6) percentage.

For the year to date, all nine climate divisions have received above normal precipitation, ranging from 100.7 percent of normal for Division 2 (NC) to 116.8 percent of normal for Division 1 (NW). For the 2020 water year, which began October 1, 2019, total precipitation is above normal for eight of the nine climate divisions (94.9% to 117.9% percent of normal). Over the longer duration, beginning January 2019, all nine climate divisions have received above normal precipitation. These range from 103.7 percent for Climate Division 2 (NC) to 126.2 percent for Climate Division 7 (SW).

The 12-month SPI indices shows Climate Division 7 (SW) in the "moderately wet" category and all remaining climate divisions in the "near normal" category.   The 6-month SPI indices all climate divisions in the "near normal" category. The 3-month SPI indices shows Climate Division 6 (EC) in the "moderately dry" category and all remaining climate divisions in the "near normal" category.  The 1-month SPI indices shows Climate Division 3 (NE) in the "moderately wet" category and all remaining climate divisions in the "near normal" category.

U. S. Drought Monitor

For June 23, 2020, the U.S. Drought Monitor shows almost the entire state is experiencing abnormally dry conditions.  The U.S. Seasonal Drought Outlook predicts no drought conditions through the end of September, 2020.

Streamflow

In June 2020, eleven of the twelve streams included in drought reporting since 1999 had stream flow below normal or much below normal.  The St. Mary's River at Decatur had the lowest mean monthly flow at 33%, and the Kankakee River at Shelby had the highest mean monthly flow at 113%. 

Detailed Information on Streamflow

Lake Michigan

On June 26, 2020, the Lake Michigan-Huron forecasted water level was two inches above the measurement taken on May 26, 2020, and four inches above the measurement taken on June 26, 2019. On June 30, 2020, the Michigan-Huron level was 582.20 feet, which is about 67 inches above the lowest recorded monthly mean level for June set in 1964. Comparison of June monthly mean water levels to the long-term (1918-present) average shows Lakes Michigan-Huron water levels were about 35 inches above the average. The June monthly mean water level is about 5 inches higher than the June record maximum of 581.63 feet set in 1986. All Lake Michigan-Huron data are referenced to the International Great Lakes Datum 1985.

The Lake Michigan-Huron water level is forecast by the U.S. Army Corps of Engineers to remain the same over the next month.

Reservoirs

On June 1, 2020, the water levels for seven of the eight reservoirs monitored by the U.S. Army Corps of Engineers were at or above the normal pool elevation. The deviation from normal pool ranged from -1.0 feet (Patoka) to +1.9 feet (Cecil Hardin). 

All three reservoirs monitored by Citizens Water, Geist, Morse, and Eagle Creek, were above their respective normal pool elevations as of June 30, 2020. The deviation from normal pools ranged from 0.58 feet (Geist) to 0.91 feet (Eagle Creek).

Groundwater Levels

As of June 30, 2020 new water level data is available for five of the nine wells currently monitored. Water levels for Harrison 8 and Clark 20 are as of June 28, 2020 and Lagrange 2 as of June 9, 2020. There appears to be an equipment malfunction for Lagrange 2. Of the nine wells monitored, data indicates groundwater levels are currently above to well above normal for Vigo 7 and Lagrange 2. Groundwater levels are near normal for LaPorte 9, Randolph 3 and Posey 3. Groundwater levels are below normal for Fulton 7, Morgan 4, Harrison 8 and Clark 20.

Real-time data are available for all nine observation wells. The real-time information may be accessed on the following U.S. Geological Survey website:
http://waterdata.usgs.gov/in/nwis/current/?type=gw

Acknowledgments
This report has been compiled from Division of Water data and from information supplied by the following:

Precipitation data:
National Oceanic and Atmospheric Administration, National Weather Service, Midwestern Regional Climate Center

Standardized Precipitation Index (SPI):
National Drought Mitigation Center (NDMC) and Western Regional Climate Center (WRCC)

Streamflow:
U.S. Geological Survey and State of Indiana cooperative program

Lake Michigan level data:
U.S. Army Corps of Engineers, Detroit District

Reservoir data:
U.S. Army Corps of Engineers, Louisville District

Groundwater level data:
U.S. Geological Survey and State of Indiana cooperative program

Temperature data:
Midwestern Regional Climate Center and Indiana State Climate Office, Purdue University