• The Fork ran at 79.2% of average near Emma on July 31. That’s up from last week’s 64.8%.
• Lake Powell’s elevation has dropped about eight inches since last week.
• Maximum air temperature reached nearly 90°F in mid-July at the Aspen airport.
Author Archives: Laurine Lassalle
Laurine Lassalle is Aspen Journalism’s data desk editor, where she works to catalog and analyze local public data. She has a master’s degree in data and investigative journalism from UC Berkeley with an emphasis on environmental reporting.
Data dashboard: An important caveat for summer’s occupancy rate
• June paid occupancy reached 63.4% in Aspen and 42.7% in Snowmass, down from last year’s 64.3% and 47.6%, respectively.
• The Fork below Maroon Creek ran at 51.7% of average on July 24, up from 50.8% last week.
• Lake Powell’s elevation is down to 3,536.9 feet.
Data dashboard: June sees above-average precipitation at Aspen airport
• A total of 0.94 inches of rain fell at the Aspen airport in June, or 110% of normal.
• The Fork ran at 50.8% of average below Maroon Creek on July 17.
• Lake Powell’s elevation reached 3,538.3 ft on July 17, down from 3,539.5 ft on July 10.
Data dashboard: Local streamflow on the decline
• The Fork was flowing at 665 cfs near Emma on July 10, down from 797 cfs last week.
• Lake Powell’s elevation reached 3,539.5 feet on July 10, slightly down from 3,539.8 feet on July 4.
• High air temperatures at the Aspen airport dropped below normal in late-June.
Recent drop in Lake Powell’s storage shows how much space sediment is taking up
Updated Bureau of Reclamation data downgraded the reservoir’s volume of water stored by 443,000 acre-feet, based on a recent sedimentation study.
Data dashboard: Local streamflow down as low as 50-60% of average
• The Roaring Fork River ran at 79.5% of average below Maroon Creek on June 26, or 622 cfs. That’s down from 1,130 cfs on June 19.
• Lake Powell’s elevation reached over 3,539 feet on June 26, up from about 3,537 feet on June 15.
• Maximum air temperature at ASE dropped below normal on June 20.
Data dashboard: Aspen sees above-normal high temperatures all but one day so far in June
• The Crystal River ran at 1,350 cfs near Redstone. That’s down from its seasonal peak of 1,770 cfs on June 12.
• Independence and McClure Passes still have some snowpack, while it is gone at Ivanhoe and Schofield Pass.
• Maximum air temperature reached up to 87°F on June 11 at the Aspen/Pitkin County Airpot. That’s 15 degrees above normal.
Data dashboard: Streamflows exceed May peak in many local reaches
• The Crystal River near Redstone flowed at 1,770 cfs on June 12, while the Crystal at the CPW Fish Hatchery bridge ran at 2,100 cfs.
• Lake Powell’s elevation reached 3,536.2 feet on Sunday, up from 3,534 on June 5.
• Roaring Fork Basin snowpack has almost entirely melted.
Data dashboard: Roaring Fork Basin snowpack making its last stand
• McClure Pass and Ivanhoe recorded a snowpack of 0 inches on June 5.
• Snowpack at Indy Pass was at about 10% of average, while Schofield Pass’ snowpack was at less than 2% of average on June 5.
• The Roaring Fork River is running at about 50% of average, while the Crystal is over 100%.
Data dashboard: Glenwood soil moisture improves over 2021
• The Roaring Fork River near Aspen ran at 198 cfs on May 30. That’s down from 229 cfs on May 28.
• Snowpack at Indy Pass increased from 5.6% of average last week to 12.1% of average on May 30.
• Lake Powell’s elevation reached 3,531 feet on May 30, up from 3,528 feet on May 22.
