San Gabriel Valley Municipal Water District

LA Rainfall : LA RAINFALL Source: Los Angeles Times Daily Weather Section; downtown Los Angeles readings. The LA Times utilizes data on a season/annual basis that begins July 1 and ends June 30 of each year. Thus, current season means “from July 1, 2009 to date”, and season norm means “from July 1 to date.” Each of these data are updated daily by the LA Times, and updated monthly on this web site. [CLOSE] Since July 1: 13.37" (135% of normal)	?
California Snow Levels: [CLOSE] CALIFORNIA SNOW LEVELS Source: California Department of Water Resources; California Data Exchange Center; California Cooperative Snow Surveys; this statistic shows two key statistics describing the percent of snow water equivalents (i.e., moisture content in the snow pack): 1) as a percent of normal; and 2) based on the assumption of an April 1 “peak snow water accumulation” date. Note: The most important characteristic of snow to water managers and hydrologists is its water content. However, depth is of interest to many people also. State data collection equipment measures the weight of the snowpack, and therefore its water content. New-fallen snow can range in density depending on the air temperature and intensity of the storm. In California, densities of 12% are common. This means that for every 10 inches of snow that accumulates, it will melt to a pool of water 1.2 inches deep. After snow falls, it settles and compacts. The snowpack gets less and less deep, but the snow doesn't melt or go anywhere. Rather, its density increases. Therefore, snow depth is a fleeting indicator of the snowpack. By obtaining a measure of the water content of the snow, which doesn't change unless more precipitation occurs or the pack melts, we have a good handle on how the rivers will react in the spring. After May, the snowpack melts due to both rainfall and the intense sunshine of late spring and summer, which is the principal melting energy source. [CLOSE] 99% of normal /81% of peak	?
California Reservoir Levels: CALIFORNIA RESERVOIR LEVELS Source: California Department of Water Resources; California Data Exchange Center; Summary of Storage in Major Reservoirs; includes 158 reservoirs in California, North Coast, and Colorado River (Lake Mead, Lake Powell); these statistics show reservoir levels statewide, both as a percentage of average and a percentage of capacity as of December 31, 2008. [CLOSE] 73% of average /52% of capacity	?
Watering Index: 32% [CLOSE] WATERING INDEX Source: Metropolitan Water District. The Watering Index is a scientifically based guide to help people adjust watering schedules for landscape irrigation controllers (also commonly known as "timers") that include a water budget adjustment feature. This feature - either a button or a dial - permits the watering run times for all electric valves managed by a controller to be increased or decreased with just one adjustment. The Watering Index represents the recommended percentage setting for the watering adjustment feature. The index is normally 100 percent for much of July and August. Over the course of the year the index changes to reflect the landscape’s changing need for water as climatic conditions change. As new Watering Index values are published weekly, the controller’s percentage adjust feature should be changed to match the current index value. MORE INFORMATION AT BEWATERWISE.COM Note: the Watering Index does not provide watering times for each electric valve or station. Instead, it simply specifies a value that the percentage adjust feature should be set at. The watering times will automatically change across the board when the percentage adjust setting is changed. [CLOSE]	?
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FACILITIES

State Water Project

The San Gabriel Valley Municipal Water District’s imported water source is the State Water Project canal, also known as the California aquaduct. Water is delivered by the State Water Project to the San Gabriel Valley. Pumps and gravity help move the water from Northern California, over the mountains, and to our basin.

Devil Canyon-Azusa Pipeline

Water coming from the State Water Project/California Aqueduct powers turbines in the Devil Canyon Power Plant near Lake Silverwood, and then enters the pipeline through the slide-gate in the foreground.

Turnouts Release Replacement Water

As replacement water flows from the State Water Project to local spreading grounds, the pressure and flow is managed or controlled at several pressure-reducing stations and "turnouts", along our pipeline.

Spreading Grounds

Spreading grounds are operated and maintained by the Los Angeles County Department of Public Works. Here, water percolates (or seeps slowly) from the surface of the spreading grounds downward to replenish and re-charge underground aquifers.

“Green” Energy

The District’s hydro-electric power plant in San Dimas is also located along the pipeline. Through this forward-looking initiative, “green energy,” or electricity, is generated. Built in 1985, a turbine engine is powered by water flowing in the pipeline. This 1.05 mega-watt generator produces enough electricity for over 500 homes each year. The revenue the Water District receives through energy sales helps to offset operating costs.

Water Treatment Facilities

The Water District helps its member cities by providing financial grants and loans for infrastructure projects that clean and purify their water supplies, and help them meet state and federal standards.

1402 N. VOSBURG DRIVE | P.O. BOX 1299
AZUSA, CALIFORNIA 91702
PHONE: (626) 969-7911, FAX: (626) 969-7397
EMAIL: feedback@sgvmwd.org

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