The probable minimum inflow scenario reflects a dry hydrologic condition which statistically would be exceeded 90 percent of the time. The model is based on weather conditions over a thirty-year span. GCC is the official nonprofit partner of Glen Canyon National Recreation Area & Rainbow Bridge National Monument. But the 30-year period is the standard reference worldwide and captures more variability, according to Paul Miller of the Colorado Basin River Forecast Center. The August 2022 24-Month Study modeled 2023 and 2024 operations at Lakes Powell and Mead as if the 0.480 maf had been delivered to Lake Mead for operating tier/condition purposes both for the U.S. Lower Basin and for Mexico. DATE MEASURED ELEVATION CHANGE CONTENT INFLOW OUTFLOW HIGH TEMP LOW TEMP WATER TEMP . 175 0 obj <>/Filter/FlateDecode/ID[<68753438768B134985CC80C922059B30>]/Index[159 34]/Info 158 0 R/Length 84/Prev 199590/Root 160 0 R/Size 193/Type/XRef/W[1 2 1]>>stream google_color_bg = "FFFFFF"; Federal and state water managers have watched the water level in Lake Powell closely this year. SW Satellite Weather The basin states, in a response letter, expressed concern that the water level of Lake Powell would decline below critical elevations, making the dam inoperable. google_ad_type = "text_image"; The Bureau of Reclamation announced on May 3, 2022, two separate urgent drought response actions that will help prop up Lake Powell by nearly 1 million acre-feet (maf) of water over the next 12 months (May 2022 through April 2023). The March 2023 releases are anticipated to fluctuate between a low of 5,276 cfs to a high of 9,641 cfs. levels. Lake Powell