South Platte River Basin #climate for the week ending July 6, 2026

Below is the Precipitation Accumulation in South Platte graph from the NRCS for July 6, 2026. Precipitation is at 7% of the median (down 1% one week), and 58% of the water year median (no change one week), this morning. There are 86 days left in the water year.

There is a slight chance for showers today, showers are likely Tuesday, with a chance for thunderstorms Wednesday, Thursday, and Friday, in the central mountains. There is a slight chance for showers today, showers are likely Tuesday, Wednesday and Thursday, with a chance for thunderstorms Friday, in the northern mountains. There is a chance for thunderstorms Tuesday, Wednesday, and Thursday, down here about 181 miles from Julesburg where the Battle of Julesburg took place on January 7, 1865. From Wikipedia:

The Battle of Julesburg took place on January 7, 1865, near Julesburg, Colorado between 1,000 CheyenneArapaho, and Lakota Indians and about 60 soldiers of the U.S. army and 40 to 50 civilians. The Indians defeated the soldiers…The Julesburg Battle is unusual in that the main source of information about the battle comes from the Indian side, mostly from George Bent…a Cheyenne warrior who participated in the battle.

Cheyenne warrior George Bent and his wife Magpie in a photo taken many years after the Battle of Julesburg. By Unknown author Courtesy of History Colorado – http://www.nps.gov/sand/historyculture/images/georgemagpie_intext_1.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=10547426

Here’s a look at the 7-Day Colorado precipitation map through July 5, 2026 from the High Plains Regional Climate Center. Precipitation in the South Platte Basin along the Continental Divide of the Americas ranged from 0.00” to 0.30”.

Here’s the 7-Day percent of normal precipitation map through July 5, 2026 from the High Plains Regional Climate Center. Precipitation in the South Platte River Basin along the Continental Divide of the Americas ranged pretty much 0% of normal.

Note: the 7-Day Quantitative Precipitation Forecast by NOAA is not rendering for me this morning.

Below are the 8-14 day outlooks from the Climate Prediction Center, issued July 5, 2026, for temperature and precipitation, for the week starting July 13, 2026. The CPC expects above normal temperatures and near normal precipitation for the mountains of the South Platte River Basin.

Below is the Colorado Drought Monitor map from June 30, 2026. There was a one class degradation in Park County. There were one class improvements in Park, Clear Creek, Gilpin, Jefferson, Boulder, Weld, Logan, Morgan, Sedgwick, Adams, Arapahoe, and Elbert counties. Drought and abnormal dryness covers 100% of Colorado. The South Platte Basin is experiencing Abnormally Dry, Moderate, Severe, Extreme, and Exceptional drought conditions.

Colorado Drought Monitor map June 30, 2026.

Below is the Colorado Drought Monitor one week change map ending June 30, 2026.

Colorado Drought Monitor one week change map ending June 30, 2026.

Here’s the US Drought Monitor Map from last week along with the one week U.S. change map.

US Drought Monitor map June 30, 2026.
US Drought Monitor one week change map ending June 30, 2026.

Below is a screenshot of the USGS streamgages this morning that includes the South Platte River Basin.

Finally, Allen Best asks The nagging, unanswerable question for the Colorado River: What if next year looks like this one?:

What cannot be contested is Becky Mitchell’s assertion that demands cannot exceed supplies. This year, we’re robbing Peter to pay Paul. Water is being taken from Flaming Gorge and other federal upstream reservoirs to keep water in Powell. Blue Mesa Reservoir near Gunnison may have too little water to release any downstream, a condition called dead pool. The Bureau of Reclamation similarly sees that possibility for Navajo, the reservoir on the Colorado-New Mexico border.

The Bureau intends to release six million acre-feet from Powell for the lower-basin, leaving Powell 80% empty. The agency’s “most probable” projections see reservoir levels at Glen Canyon Dam early next year being too low to generate electricity.

In Grand Junction this week, people stood in the rain with sheer delight. It was a feel-good moment. But will El Niño save us from calamity? Maybe, but don’t bet on it. The warming climate seems to be rewriting the rules about how much water from the Pacific Ocean arrives on our mountains.

That was the takeaway from a recent presentation by Brad Udall, a scientist scholar affiliated with Colorado State University. El Niños in the past have produced big water years. One was in 1983, the year that flood waters nearly broke Glen Canyon Dam. Often, though, an El Niño produces no more moisture than a La Niña. Video ⬇️.