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Stanislaus County Sheriff's Department
Friday February 17th, 2017 :: 06:32 p.m. PST


Potential Storm Impacts to Stanislaus County on the Tuolumne River and San Joaquin River

Stanislaus County –Turlock Irrigation District (TID) continues to make releases to the Tuolumne River to accommodate water inflow to Don Pedro Reservoir in cooperation with the United States Army Corps of Engineers and Stanislaus County’s Office of Emergency Services.

The Stanislaus County Sheriff's Department Mobile Field Force and Special Vehicle Operations Unit deputies have been out in the county on both the San Joaquin and Tuolumne Rivers making notification to residents who potentially can be impacted. We will continue to strongly advise residents near the rivers to move property and animals to keep them safe.

Over the last two days the Stanislaus County Sheriff’s Department has contacted residents at the Shiloh River Resort on Shiloh Road and today we notified residents at the Driftwood & Terrace Trailer Parks to advise them of the rising water levels on the Tuolumne River.

This current weather system is forecasted to last through Saturday, and will be followed by a short break Sunday. More rainfall is expected to return Monday and last through at least Tuesday. Saturated soils coupled with high wind Friday and Monday could potentially result in toppled trees and power lines.

TID is advising the current combined forecast for Monday, Feb. 20, and Tuesday, Feb. 21, calls for a sum of 4.9 inches of precipitation in the watershed above Don Pedro Reservoir. If this forecasted precipitation develops into actual inflow to Don Pedro Reservoir, this volume of water would put Don Pedro Reservoir above elevation 830 feet, forcing TID to operate its controlled spillway in compliance with the US Army Corps of Engineers Flood Control Manual for the Reservoir.

It is important to note this forecast continues to fluctuate hourly in duration and magnitude, but prudent planning requires that TID treat these forecasts as actual precipitation numbers and operate accordingly. TID continues to monitor storms and take necessary precautions. TID will provide updates daily.

Residents should be prepared for the potential of additional regionalized flooding events in the coming days. Always avoid flooded roads, remain clear of fast-moving creeks and rivers, and follow all emergency signage.

• For emergencies, dial 911

• Stanislaus County Office of Emergency Services Public Information Line 8AM-8PM: 209-552-3899 or 1-877-216-5702

• Flood Safety Checklist:

• Information on mold/moisture in the home (California Department of Public Health):

• Don Pedro levels and Tuolumne River releases at

• Red Cross Shelter Patterson: 1-844-236-0153

Stay Updated on Current Information: To sign up for emergency notification from Stanislaus OES please register at You can receive emergency notification via text, phone call or email for your residence or another family member’s residence.

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We will continue to strongly advise residents near the rivers to move property and animals to keep them safe. Sign up for emergency notification from Stanislaus OES please register at

Stanislaus County Sheriff's Department
250 Hackett Road
Modesto, CA 95358

Emergency: 9-1-1
Non-emergencies: 209-567-4401

Alert Details

Moderate - Possible threat to life or property
Future - Responsive action SHOULD be taken in the near future
Likely (p > ~50%)
Meteorological (inc. flood)
Flood Watch

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