Imperial Oasis - Imperial Reservoir

We recently conducted our annual electrofishing survey on the backwaters of the Imperial Division of the Colorado River to gather data on relative abundance, size, growth of fish and to detect any large-scale changes in the fish population.

The largemouth bass population appears to be doing well – the largest sampled was 23.9 inches and 9.5 pounds. More than 20 percent of the largemouth bass captured during the survey were 15 inches or larger. A high number of young-of-the-year largemouth were sampled as well – possibly an indication for a future robust population in this area.

A total of 2,235 fish were sampled at 17 survey stations -- including 206 largemouth bass. Other species
collected included bluegill and redear sunfish, black crappie, warmouth sunfish, threadfin shad, gizzard shad, blue tilapia, common carp, striped bass, flathead catfish, and channel catfish. - azgfd