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Another Dry Year In The Colorado River Basin

/in , /by /Moab Sun News (Moab, UT)

2018 has brought record-low snowpack levels to many locations in the Colorado River Basin, making this the driest 19-year period on record. With the depressed snowpack and warming conditions, experts indicate that runoff from the Rocky Mountains into Lake Powell this spring will yield only 42 percent of the long-term average. With drought and low runoff conditions dating back to 2000, this current period is one of the worst drought cycles over the past 1,200-plus years.

 

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By order of President Franklin Delano Roosevelt, the U.S. Navy built the San Diego Aqueduct to deliver Colorado River water to San Diego. It is now known as Pipeline 1. Photo: SDCWA

1947: Construction of the First San Diego Aqueduct

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San Diego became a hub of Naval Activity after the Japanese bombed Pearl Harbor and the United States entered World War II in 1941. The city’s population doubled in two years, and water use also doubled. It was clear the city and the Navy would soon need water from the Colorado River. An aqueduct for bringing that water to San Diego became a top priority.

The Navy was willing to help build the aqueduct, and let the City of San Diego pay it back. On November 28, 1947, the first Colorado River water finally flowed south from the Colorado River aqueduct’s western end in Riverside County for 71 miles into the City of San Diego’s San Vicente Reservoir near Lakeside via the San Vicente Aqueduct, now known as Pipeline 1 of the First San Diego Aqueduct. It ran over some of the county’s most rugged terrain and could deliver 65,000 acre-feet per year. At a time when all of San Diego County had less that three weeks’ water supply remaining, the completion of the project came just in time.

Mexico, 2 US States Could See Colorado River Cutback In 2020

/in , /by /Associated Press by Dan Elliott

Mexico and the U.S. states of Arizona and Nevada face a better-than-even possibility of getting less water from the Colorado River in 2020 because of a persistent drought, water managers said Wednesday. The U.S. Bureau of Reclamation, which manages the river, released projections showing a 52 percent chance the river’s biggest reservoir, Lake Mead in Arizona and Nevada, will fall low enough in 2020 to trigger cutbacks under agreements governing the system.

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