ILLINOIS RESERVOIR REPORT

Last Updated: December 21, 2025

In Illinois, a notable deviation in reservoir storage levels has been observed in the recent dataset, particularly for the Channel Lake near Antioch where the current gage height is listed as -999999, which represents a data error or unrecorded measurement as of the last observation on December 21, 2025. This anomaly makes it challenging to determine its current condition. In contrast, both Fox Lake near Lake Villa and Nippersink Lake at Fox Lake are reporting gage heights significantly lower than their averages of 3.91 ft and 3.85 ft, respectively, with current levels at 2 ft. This suggests that these water bodies are experiencing lower-than-average water levels, which could potentially be due to lower precipitation, decreased upstream river flows, or other environmental factors not immediately identified by the given sources.

It is important to cross-reference these findings with reliable data sources to confirm the accuracy of the observations. However, the provided sources, discussing the most dangerous lakes in the United States and fire safety during the holiday season, do not offer relevant information concerning the current reservoir and dam conditions in Illinois. Without more pertinent data, the exact cause of the abnormal conditions cannot be thoroughly analyzed. These low water levels could impact local ecosystems, water quality, and recreational activities if they persist. Furthermore, without proper data from Channel Lake, it is difficult to assess its condition, which may be crucial given that deviations in dam and reservoir levels can affect flood control and water supply to surrounding communities. It is recommended to seek additional, up-to-date hydrological data and consult local water management authorities to get a clearer picture of the situation and any potential risks or required actions.

Illinois has several reservoirs and dams, primarily used for flood control, municipal water supply, and recreational activities. Major reservoirs in the state include Lake Shelbyville, Lake Springfield, Lake Decatur, and Rend Lake. These reservoirs receive water from various streams and rivers, including the Kaskaskia River, Sangamon River, and the Little Wabash River. Snowpack and mountains are not significant factors in Illinois hydrology, as the state has a relatively flat landscape. However, seasonal trends can affect water levels, with higher precipitation in the spring and lower levels in the summer. Drought conditions can also impact reservoir levels, with Lake Shelbyville experiencing record low levels in 2012 due to a severe drought. Overall, Illinois' reservoirs and dams play a critical role in managing water resources for the state's population and economy.

Illinois has several reservoirs and dams, primarily used for flood control, municipal water supply, and recreational activities. Major reservoirs in the state include Lake Shelbyville, Lake Springfield, Lake Decatur, and Rend Lake. These reservoirs receive water from various streams and rivers, including the Kaskaskia River, Sangamon River, and the Little Wabash River. Snowpack and mountains are not significant factors in Illinois hydrology, as the state has a relatively flat landscape. However, seasonal trends can affect water levels, with higher precipitation in the spring and lower levels in the summer. Drought conditions can also impact reservoir levels, with Lake Shelbyville experiencing record low levels in 2012 due to a severe drought. Overall, Illinois' reservoirs and dams play a critical role in managing water resources for the state's population and economy.