IA03512-CARTER-ROAD-STORMWATER-DETENTION-DAM RESERVOIR REPORT

Last Updated: February 24, 2026

As the nation's hydrologists and water management researchers scrutinize the latest observations of dams and reservoirs, a mixed picture of water storage levels emerges. The data suggests a number of water bodies are experiencing fluctuations, with some holding surpluses and others facing shortages when compared to historical averages.

For instance, Lake Powell in Arizona is displaying significantly lower storage levels at 5,951,735 acre-ft, a stark contrast to its average of 14,666,115.92 acre-ft. Similarly, California's Lake Mead also shows a notable deficit with a storage of 8,866,676 acre-ft against an average of 17,972,236.37 acre-ft. In contrast, California's New Melones Reservoir is brimming with 1,983,900 acre-ft, surpassing its historical average of 1,443,401.24 acre-ft. These variances are crucial for understanding the water supply dynamics and for devising strategies for sustainable water resource management.

On a positive note, Lake Almanor in California reported a significant surplus in its storage levels, currently holding 1,094,528 acre-ft compared to its average of 895,289.67 acre-ft. However, in states like Colorado, several reservoirs like Dillon and Granby are experiencing lower storage levels, with current numbers at 197,776 and 332,544 acre-ft respectively, below their averages of over 230,000 and 380,000 acre-ft. Such conditions may be related to variations in seasonal snowpack and river flows, which are critical influencers of reservoir levels.

These observations underscore the diversity of water storage conditions across the nation. While some areas are experiencing surpluses that could provide water security, others are in deficit, potentially leading to water restrictions and heightened conservation measures. It's imperative to cross-reference these data points with local meteorological patterns and water usage to understand the broader implications for water availability and policy planning. The interplay between natural hydrological cycles and human consumption continues to shape the reservoir and dam landscapes, highlighting the need for adaptive water management practices that can respond to these dynamic conditions.