Images of improvement

摘要

The East Canyon Reservoir, located in the mountains northeast of Salt Lake City, was included in the "high priority" group for Utah's impaired waters in the 1998 list and thus required a total maximum daily load (TMDL) plan for total phosphorus to restore beneficial uses and water quality standards. The TMDL was completed in 1999, and strategies were implemented in 2000 to reduce phosphorus levels in the reservoir. The results of the study indicated that the annual average load of phosphorus into the reservoir is 4182 kg (9220 lb). The target annual average load into the reservoir was determined to be 2561 kg (5647 lb), so a load reduction of 1621 kg (3573 lb) per year was required to meet the standard. The TMDL proposed activities to reduce the phosphorus load to East Canyon Reservoir to acceptable levels, thereby reducing nuisance algal growth.