Paso Robles News|Tuesday, April 28, 2026
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    City secures additional Nacimiento water 

    Water will be used to recharge river underflow, lessen demand water treatment plant

    –At the most recent Paso Robles City Council meeting, the council unanimously adopted necessary environmental findings and approved the acceptance of the city’s full Nacimiento reserve water allocation. This means that the city has secured access to an additional 2,488 acre feet of Nacimiento water at no additional cost. since the delivery system infrastructure already exists.

    No additions or expansion to the water delivery system are proposed, and no operational changes would result from this action. Additionally, no new or amended permits are associated with this action. The city prepared an environmental analysis on the potential implications of this action which determined that no potential environmental impacts are anticipated as a result of the additional water delivery entitlement.

    The San Luis Obispo County Flood Control & Water Conservation District, is entitled to no less than 17,500 acre feet of water per year from Lake Nacimiento. A portion of that water, 1,750 AFY, is held for lakeside uses, leaving 15,750 AFY available for use in other areas of San Luis Obispo County.

    Paso Robles, along with four other agency participants, currently holds entitlement to a combined 9,655 AFY of water. This leaves 6,095 AFY of “Reserve Water” that is not yet contractually committed. The Nacimiento Water Project infrastructure has an existing capacity to deliver the full 15,750 AFY. The approved action will allow the city to accept its proportionate share of “reserve water.”

    proposed water full allocation paso robles

     

    The additional allocation would be used to:

    • Increase reliability of water supplies
    • Reduce demand on Paso Robles groundwater basin wells
    • Augment summertime peak demands
    • Response to a water rights challenge
    • Provide for emergencies, including, water quality event, or well failure, etc.
    • Address impacts of prolonged drought / climate change.

     

    The city’s water treatment plant, which is now operational, treats Nacimiento Water Project water to offset groundwater production and improve water quality. Due to treatment plant capacity limitations, additional Nacimiento Water Project water will either not be transported to the plant or it will be released into the Salinas River underflow to recharge the aquifer and sustain pumping from the city’s river wells.

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    Shannon Sisemore Mansfield

    Could someone please explain to me why we are continuing to build new homes and office buildings when we are still in a drought? Obviously, it must not be that bad of a drought.

    Angela Thorne

    That is the exact message that they are sending! It must not be that bad since all these new houses and other structures being built. I don't get it.

    Follow this discussion
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    2 Comments
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    Shannon Sisemore Mansfield

    Could someone please explain to me why we are continuing to build new homes and office buildings when we are still in a drought? Obviously, it must not be that bad of a drought.

    Angela Thorne

    That is the exact message that they are sending! It must not be that bad since all these new houses and other structures being built. I don't get it.

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