INDIANA RESERVOIR REPORT

Last Updated: March 13, 2026

As the latest observations reveal, the nation's dams and reservoirs are experiencing a variety of storage levels that merit attention from water management officials and hydrologists. Some reservoirs are facing surpluses while others grapple with lower than average water levels, factors that could impact water supply and ecosystem health.

For instance, Lake Winnipesaukee in New Hampshire is currently below its average gage height, which could indicate potential water shortages if such trends continue. Similarly, the Maurice R at Union Lake Dam in New Jersey shows a significant drop in streamflow, hinting at potential drought conditions. On the other hand, reservoirs like Greenwood Lake in New Jersey and Prompton Reservoir in Pennsylvania are slightly above their average water surface elevations, suggesting healthier water reserves.

In the Midwest, the Wanaque Reservoir in New Jersey is notably below its average elevation, raising concerns about water availability in the region. Conversely, General Edgar Jadwin Reservoir and Beltzville Lake, both in Pennsylvania, are experiencing slightly higher than average water levels. This could be a result of recent precipitation events or changes in water management strategies.

Out West, reservoirs such as the John Martin Reservoir in Colorado and Savage River Reservoir in Maryland are above average levels, potentially due to increased snowpack melting or successful conservation efforts. However, the O'Shaughnessy Reservoir in Ohio and Big Chapman Lake in Indiana are registering lower water levels, which may affect local water supply if trends persist.

Reservoir storage fluctuates due to various factors, including seasonal changes, precipitation patterns, and human management. The observed anomalies in water levels across different reservoirs underscore the importance of continuous monitoring and adaptive water management strategies to address the dynamic needs of communities and ecosystems. As such, water researchers and hydrologists are called upon to delve deeper into these patterns to ensure sustainable water resource management in the face of climatic variability and growing demand.

Indiana has several major reservoirs and dams used for flood control, water supply, and recreation. Some of the notable reservoirs include the Brookville Lake, Cecil M. Harden Lake, Patoka Lake, and Monroe Lake. These reservoirs rely on streamflow from nearby rivers and creeks such as the White River and its tributaries, the Patoka River, and the Salt Creek. The state's terrain is relatively flat, and there are no significant mountains or snowpack that contribute to the hydrology of the area. Record levels and drought conditions are relatively rare in Indiana, although occasional droughts have affected some regions. The state typically experiences a humid continental climate with warm summers and cold winters, and seasonal trends in precipitation can affect the water levels in reservoirs. Overall, Indiana's reservoirs and dams play a crucial role in managing the state's water resources, providing essential water supply and recreational opportunities while mitigating flood risk.

Indiana has several major reservoirs and dams used for flood control, water supply, and recreation. Some of the notable reservoirs include the Brookville Lake, Cecil M. Harden Lake, Patoka Lake, and Monroe Lake. These reservoirs rely on streamflow from nearby rivers and creeks such as the White River and its tributaries, the Patoka River, and the Salt Creek. The state's terrain is relatively flat, and there are no significant mountains or snowpack that contribute to the hydrology of the area.

Record levels and drought conditions are relatively rare in Indiana, although occasional droughts have affected some regions. The state typically experiences a humid continental climate with warm summers and cold winters, and seasonal trends in precipitation can affect the water levels in reservoirs. Overall, Indiana's reservoirs and dams play a crucial role in managing the state's water resources, providing essential water supply and recreational opportunities while mitigating flood risk.