Monthly Water Resource Summary

January, 2017

Precipitation

For January 2018, Indiana's precipitation was generally below normal, with average temperature below normal. The statewide monthly precipitation average was 79.6 percent of normal. The overall monthly temperature average for Indiana was 24.4 degrees Fahrenheit or 1.6 degrees below normal.

Eight of the nine climate divisions received below normal or well below normal precipitation for the month of January. The southwestern climate division received the highest (102.6) percentage of normal precipitation for the month, while the northeastern climate division received the lowest (57.5) percentage.

For the 2018 water year, which began October 1, 2017, total precipitation is near or above normal for five of the nine climate divisions (85.7% to 119.3% percent of normal). Beginning January 2017, eight of the nine climate divisions have received near or above normal precipitation. These range from 92.9 percent for the southwestern division to 118.5 percent for the northeastern division.

The Standardized Precipitation Index (SPI) long-term 12-month indices shows the west-central, southwestern, and south-central climate divisions in the "near normal" category with the remaining climate divisions in the "moderately wet" category. The 6, 3, and 1-month SPI indices shows all climate divisions in the "near normal" category.

U. S. Drought Monitor

For the period ending January 30, 2018, the U.S. Drought Monitor shows two small areas of "abnormally dry" conditions in the west-central and southwestern portions of the state. No other drought conditions exist in the state.  The U.S. Seasonal Drought Outlook predicts current drought conditions will end by April 30, 2018.

Streamflow

Of the twelve streams included in drought reporting since 1999, eight had stream flow well below normal, three had stream flow near normal, and one had stream flow well above normal.  The Kankakee River at Shelby had the highest mean monthly flow at 141%, and the Muscatatuck River near Deputy had the lowest mean monthly flow at 55%.

Detailed Information on Streamflow

Lake Michigan

The Lake Michigan-Huron water level for January 26, 2018 was the same as the measurement taken on December 26, 2017, and ten inches above the measurement taken on January 26, 2017.  On January 31, 2018 the Michigan-Huron level was 579.87 feet, which is approximately 46 inches above the lowest recorded monthly mean level for January set in 2013. Comparison of January monthly mean water levels to the long-term (1918-present) average shows Lakes Michigan-Huron water levels were approximately 17 inches above the average. All Lake Michigan-Huron data are referenced to the International Great Lakes Datum 1985.

The U.S. Army Corps of Engineers predicts the Lake Michigan-Huron water level to fall one inch over the next month.

Reservoirs

On December 29, 2017, the water level for four of the eight Indiana reservoirs being monitored by the U.S. Army Corps of Engineers was at or below normal pool elevation. The normal pool deviation ranged from -0.9 feet (Patoka) to 0.6 feet (J.E. Roush).

Two of the three reservoirs monitored by Citizens Water were above their respective normal pool elevations as of January 1, 2018. The deviation from normal pools ranged from -0.03 feet (Eagle Creek) to 0.13 feet (Morse).

Groundwater Levels

On January 31, 2018, the water level for seven of the eight Indiana reservoirs being monitored by the U.S. Army Corps of Engineers were above normal pool elevation. The deviation from normal pools ranged from -1.0 feet (Cecil Harden) to 1.5 feet (Cagles Mill).

Two of the three reservoirs monitored by Citizens Water were above their respective normal pool elevations as of January 31, 2018. The deviation from normal pools ranged from -1.02 feet (Eagle Creek) to 0.25 feet (Morse).

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