San Luis Obispo County Sees Above-Average Rainfall and Healthy Reservoir Levels

Recent storms have boosted rainfall totals across the region, with most areas exceeding yearly averages.

Feb. 21, 2026 at 1:57am

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Following two major storms, rainfall totals in San Luis Obispo County are well above average for this time of year, according to data from the county website. Most areas have exceeded their typical annual rainfall amounts, and state and local reservoir levels remain healthy, with several reservoirs at over 100% capacity.

Why it matters

The increased rainfall is welcome news for the region, which has faced periodic droughts in recent years. The healthy reservoir levels help ensure adequate water supplies for agriculture, residential use, and the environment.

The details

Rainfall totals from July 1 through February 20 show that most areas of San Luis Obispo County have received significantly more precipitation than their average annual amounts. For example, Arroyo Grande has received 16.53 inches to date, compared to an average annual total of 14.09 inches, while Santa Margarita has seen 22.56 inches so far this year against a typical annual rainfall of 16.96 inches.

  • The rainfall data is tracked from July 1 through June 31 each year.
  • The recent storms that drenched the county occurred in early 2026.

The players

SLO County

The county government of San Luis Obispo, which tracks and reports on rainfall and reservoir levels in the region.

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The takeaway

The substantial rainfall and healthy reservoir levels in San Luis Obispo County are a positive sign for the region's water security, providing relief from past droughts and ensuring adequate supplies for agriculture, residential use, and the environment.