Tag Archives: hydrology

April 1, 2015 Bulletin 120 and Water Supply Index forecasts

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From the Department of Water Resources: The April 1, 2015 Water Supply Index (WSI) and Bulletin 120 (B120) forecasts are finished. The forecasts include observed conditions through the end of March. The forecasts are posted at: WSI:    http://cdec.water.ca.gov/cgi-progs/iodir/wsi B120:   http://cdec.water.ca.gov/cgi-progs/iodir?s=b120 Forecast Summary: The projected median April-July runoff in the major Sierra river basins ranges from 6 percent on the Tule […]

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Panel discussion: The impacts of climate change on water resources


Peter Gleick, Noah Diffenbaugh, Wade Crowfoot, and Solomon Hsiang discuss the current drought and climate change, focusing on water resources, climate risks, economic impacts, and policy solutions The Hamilton Project at Brookings and the Stanford Woods Institute for the Environment hosted the forum, New Directions for U.S. Water Policy, in October of last year, which focused on the release of […]

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Third Manual Snow Survey Confirms Shrinking Water Content; Statewide snowpack just 19% of March 3 average

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From the Department of Water Resources: The Sierra Nevada snowpack, which Californians rely on heavily during the dry summer months for their water needs, continues to disappoint this winter. Despite the snowfall in the Sierra Nevada Range over the weekend that gladdened ski and snowboard enthusiasts, it was not enough to offset weeks with no snow at all. Today’s manual […]

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Statewide Water Conditions and Preparing for a Dry 2015

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Deputy Drought Manager Jeanine Jones with a look at statewide hydrologic conditions and what to expect in the coming dry year “We are looking at a fourth year of drought,” said Jeanine Jones, the Deputy Drought Manager for the Department of Water Resources as she kicked off the National Water Resources Institute Drought Response Workshop on February 25, 2015 in […]

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California Weather Blog: After another extraordinary mid-winter dry spell, major atmospheric river to soak NorCal later this week

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From Daniel Swain at the California Weather Blog: “California has experienced some serious “weather whiplash” over the past several months. Extremely dry conditions heading into the early fall months gave way to a relatively brief ~2 week period of extremely heavy precipitation throughout much of coastal Northern California in early December, shattering local calendar date rainfall records in many places […]

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Michael Anderson, State Climatologist: Climate, Drought, and Change

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The state climatologist discusses the current drought and the signs of climate change. Is the current drought a harbinger of the future? With the winter season once again seemingly passing California by, officials are bracing for a fourth year of drought.  Earlier this month, the Public Policy Institute of California held a half-day conference in Sacramento focusing on how the […]

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California Weather Blog: A new year, a new ridge: dry and warm conditions return to California, but how does the present pattern compare to last year’s?

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From the California Weather Blog: Weather conditions over the past two months have varied wildly throughout California.Extremely heavy precipitation and unusually warm conditions in early December in the northern/central coastal regions gave way to very cold and mostly dry conditions around the new year (though not dry enough to preclude some remarkable low elevation snowfall in the lower hills of […]

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Water supply index forecast for January 1, 2015

DWR?s Frank Gehrke of California?s Snow Surveys performs snow survey with California Legislative fellows Toni Lee and Karen Morrison.

From the Department of Water Resources: A Water Year 2015 Water Supply Index (WSI) forecast for conditions as of January 1, 2015 is posted at http://cdec.water.ca.gov/cgi-progs/iodir/WSI.2015. This WSI forecast is based on the precipitation and flows through December 2014 and can be summarized as follows: Sacramento River Unimpaired Runoff Water Year Forecast(50 percent exceedance) 17.1 MAF(94 percent of average) Sacramento […]

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Survey Finds More Snow in Mountains, but Water Content Is Still Far Below Average for Date

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From the Department of Water Resources: The first manual snow survey of the Sierra snowpack this winter found more snow than last year at this time, but the snow water equivalent as measured statewide remains far below average for this date. The Department of Water Resources (DWR) conducted the survey today about 90 miles east of Sacramento on a plot […]

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