Drought

How much has Western US snowpack changed?

The Bloomberg article The End of Snow Threatens to Upend 76 Million American Lives by Baker et. el. (8/3/2022) has some excellent graphs, such as the one copied here, and overview of the water issues in the west. The West’s mountain snowpacks have shrunk, on average, 23% between 1955 and 2022. By …

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How much has Lake Mead Dropped?

Lake Mead water levels continue to drop. At the end of May it was down to 1047.69 feet, which is a 13.8 foot drop since my post on April 25 with the end of March height. The west continues in drought according to the Drought Monitor. What about electricity generation? …

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What is the status of Lake Mead?

Most of the western half of the U.S. continues to have various levels of drought (see U.S. Drought Monitor) and Lake Mead has reached a new low. The graph here is from the data on the Lake Mead at Hoover Dam, End of Month Elevation (feet) page by the Bureau …

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How dry is Arizona?

From the climate.gov article Western Drought 2021 Spotlight: Arizona by Tom Di Liberto (7/29/2021): Looking back even farther by using a drought indicator known as the Standardized Precipitation Index, the current drought in Arizona is also the worst on record back to the late 1800s. Going back even farther than …

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How Low is Lake Mead?

The Bureau of Reclamation posts the end of month elevation for Lake Mead dating back to 1935. I created the graph of minimum yearly end of month elevation starting in 1940 since Hoover Dam was only created in 1935. Here is the R code to create the graph including importing …

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How much of the U.S. is in drought?

The United States Drought Monitor is your source for drought information. Starting with the main graph, copied here, you can select regions and then down to state levels. From the data tab you can select time series graphs, download tabular data by selected region, as well as obtain GIS files. …

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