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Indiana Department of Natural Resources

Water > Water Availability / Use / Rights > Water Resource Updates (updated monthly) > Monthly Water Resource Summary Monthly Water Resource Summary

July, 2014

Precipitation
July 2014 Indiana precipitation was generally below normal across the state, with temperature on the whole also below normal. The statewide monthly precipitation average was about 78 percent of normal. The overall monthly temperature average for Indiana was 69.5 degrees Fahrenheit or 4.8 degrees below normal.

Eight of Indiana’s nine climate divisions received below normal precipitation for the month of July. The southeastern climate division received the highest (109.9) percentage of normal precipitation for the month, while the north-central division received the lowest (56.5) percentage.

For the year-to-date, each of the nine climate divisions have received above normal precipitation, ranging from 101.6 percent for the southwestern climate division to 116.6 percent for the northwestern division. For the 2014 water year starting Oct. 1, 2013, total precipitation is above normal for each of Indiana’s nine climate divisions (103.4 to 120 percent). Starting from January 2013, each of the state’s climate divisions has received above normal precipitation. Those ranges are from 105.5 percent for the northeastern division to 114.2 percent for the southwestern division.

For the Standardized Precipitation Index (SPI) long-term 12-month index, each of Indiana’s nine climate divisions are in the “near normal” category. The six-month index also shows the entire state as “near normal.” For the three-month index, the northwestern climate division lies within the “moderately wet” range. The remaining divisions are in the “near normal” category. The one-month index shows the north-central climate division in the “moderately dry” range. The rest of the state lies within the “near normal” category.

U. S. Drought Monitor
The period ending July 29, 2014 showed abnormally dry conditions for portions of south-central and southeastern Indiana. About 97 percent of Indiana showed no drought conditions.

Streamflow
Mean monthly flows for 10 of the 12 monitored streams were below or well below their historical mean monthly flow for the month of July. Sugar Creek at Crawfordsville had the lowest mean monthly flow with 23 percent of the historical mean flow for the month. The Muscatatuck River near Deputy had the highest mean monthly flow with 163 percent of the historical mean flow for the month.

Lake Michigan
The lake Michigan-Huron water level for July was two inches above last month’s water level, and 15 inches above the July 2013 water level. Comparison of July monthly mean water levels to long-term (1918-present) averages shows that Michigan-Huron water levels were about 3 inches below average. On July 31, 2014, the Michigan-Huron water level was 578.96 feet. The water level was about 28 inches above the previously lowest recorded monthly mean level for July, set in 1964.

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

Reservoirs
The water levels in five of the eight Indiana reservoirs being monitored by the U.S. Army Corps of Engineers were at or above their normal pool elevation on July 31. The normal pool deviation ranged from -0.1 feet (Cecil Harden and Monroe) to 1.4 feet (Patoka).

Each of the three reservoirs monitored by Citizens Water-Morse, Geist, and Eagle Creek- were above normal pool elevations as of July 31, 2014. The reservoirs’ deviation from their normal pools ranged from 0.09 feet (Geist) to 1.23 feet (Eagle Creek).

Ground Water Levels
As of July 31, 2014, recent water level data are available for each of the nine wells being monitored. The water level for the observation wells is above normal for LaPorte 9 and Vigo 7; near normal for Randolph 3, Morgan 4, Harrison 8, Clark 20, and Posey 3; and below normal for Fulton 7 and LaGrange 2. On July 29, 2014, a new record low water level was set for Fulton 7.  Groundwater levels are expected to decrease through August for much of the state.

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

Standard 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

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

Palmer Drought Severity Index:
U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Weather Service

Temperature data:
Indiana State Climate Office, Purdue University