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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

August, 2014

Precipitation
August 2014 Indiana precipitation was generally above normal across the state, with temperature on the whole also above normal. The statewide monthly precipitation average was about 131 percent of normal. The overall monthly temperature average for Indiana was 72.8 degrees Fahrenheit or 0.6 degrees above normal.

Eight of Indiana’s nine climate divisions received above or well above normal precipitation for the month of August. The northwestern climate division received the highest (219.4) percentage of normal precipitation for the month, while the southeastern division received the lowest (71.7) percentage.

For the year to date, each of the nine climate divisions have received above normal precipitation, ranging from 106.1 percent for the southwestern climate division to 132.2 percent for the northwestern division. For the 2014 water year starting October 1, 2013, total precipitation is above normal for each of Indiana’s nine climate divisions (105.5 to 122.1%). Starting from January 2013, each of the state’s climate divisions has received above normal precipitation. Those ranges are from 106.6 percent for the northeastern division to 117.9 percent for the northwestern division.

For the Standardized Precipitation Index (SPI) long-term 12-month index, five of Indiana’s nine climate divisions are in the “moderately wet” category and the remaining four divisions are in the “near normal” range. The 6-month index shows the northwestern climate division in the “very wet” category. The rest of the state lies in the “moderately wet” or “near normal” range. For the 3-month index, the northwestern climate division is in the “extremely wet” category, and the east-central division is in the “moderately wet” range. The remaining divisions are in the “near normal” category. The 1-month index shows the northwestern climate division in the “extremely wet” range, the east-central division in the “very wet” category, and the southwestern division in the “moderately wet” range. The rest of the state lies within the “near normal” category.

U. S. Drought Monitor
The period ending September 2, 2014 showed abnormally dry conditions for portions of north-central and northeastern Indiana. About 95 percent of Indiana showed no drought conditions.

Streamflow
Mean monthly flows for six of the 12 monitored streams were below or well below their historical mean monthly flow for the month of August. Sugar Creek at Crawfordsville had the lowest mean monthly flow with 34 percent of the historical mean flow for the month. Fall Creek near Fortville had the highest mean monthly flow with 164 percent of the historical mean flow for the month.

Detailed Information on Streamflow

Lake Michigan
The lake Michigan-Huron water level for August was the same as last month’s water level, and 15 inches above the August 2013 water level. Comparison of August monthly mean water levels to long-term (1918-present) averages shows that Michigan-Huron water levels were about three inches below average. On August 31, 2014, the Michigan-Huron water level was 579.06 feet. The water level was about 28 inches above the previously lowest recorded monthly mean level for August, set in 1964.

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

Reservoirs
The water levels in six of the eight Indiana reservoirs being monitored by the U.S. Army Corps of Engineers were at or above their normal pool elevation on September 1. The normal pool deviation ranged from -0.2 feet (Monroe) to 0.9 feet (Salamonie).

Each of the three reservoirs monitored by Citizens Water-Morse, Geist, and Eagle Creek- were above normal pool elevations as of August 31, 2014. The reservoirs’ deviation from their normal pools ranged from 0.10 feet (Morse and Geist) to 0.96 feet (Eagle Creek).

Ground Water Levels
As of September 1, 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, Vigo 7, and Randolph 3; near normal for Morgan 4, Harrison 8, Clark 20, and Posey 3; and below normal for Fulton 7 and LaGrange 2. Groundwater levels are expected to decrease through September 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