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Napa County Resource Conservation District |
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Napa County Resource Conservation District |
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Rainfall within the Napa River watershed varies dramatically depending on the topography and meso-climates of any given area. There is also great variation in he ability of the Napa River watershed soils to accept and hold water. The amount of rainfall in any given area, per storm and per rainy season, can significantly affect the amount of runoff into streams. Rainfall rate and quantity interact with many other factors to influence erosion, vegetative cover, groundwater recharge, stream water chemistry, and runoff of nonpoint source pollution into streams.
A rainfall gauge is attached to a post in an area free from obstructions and accessible to the rain gauger (the monitor) on a daily basis. The rain gauger reads the amount of precipitation and records it in the rain gauger's journal. After taking the reading, the gauger shakes the water out of the gauge and places it back on the post.
Rain gauges, a complete protocol, training and assistance with site selection are provided by the Resource Conservation District. If you are interested in gathering rainfall data, please contact the RCD at (707) 252-4188.
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