After record rains this past winter, spring 2017 groundwater levels in western Yolo County have rebounded after the drought.
Each spring and fall, the YCFCWCD measures the groundwater in approximately 150 wells. The sawtooth shape of the line in the graph above is due to the spring/fall fluctuation each year, high in spring, low in fall. This year, spring measurements occurred around the first week of April.
This spring 2016’s measurements show the groundwater is slightly higher than last spring. Even though groundwater is improving, it is still low due to the drought.
For those who want to participate or better understand our neighbors and the Solano County SGMA process.
Each spring and fall, the YCFCWCD measures the groundwater in approximately 150 wells. The sawtooth shape of the line in the graph above is due to the spring/fall fluctuation each year, high in spring, low in fall.
This fall 2015’s measurements show the groundwater is slightly higher than last fall. Water levels are higher this year because of the availability of surface water from the Cache Creek system. This year about 25% of a full amount was available, while last year in 2014, zero water was available from Cache Creek. So there was less groundwater pumping this past summer, which is reflected in the higher groundwater levels this fall. Even though groundwater is in better shape today than in 2014, it is still low due to the drought.
State Well Numbering A nice article on how the Dept of Water Resources assigns a unique ID to wells, it’s like a vehicle license plate. However, only a fraction of existing wells get a SWN. Many wells do not have a SWN.
The District’s Water Resources Technician, Aaron Gurecki, has been out all week measuring groundwater levels. We will quality check the data and results will be available next week.
There are 150 wells in the network, about 100 have been monitored since the 1950’s. We have a good history of our aquifer’s response to drought.
Asst. General Manager – Resources
Yolo County Flood Control & Water Conservation District
DWR’s Groundwater Information Center – A good example of an anaylsis tools, where you can zoom in and see the effect at Hungry Hollow, Zamora, and Conaway, etc.
https://gis.water.ca.gov/app/gicima/ (But unfortunately, the Cities’ well data was prohibited to be included until recently, so the results need to consider
http://wrid.facilitiesmap.com/ has raw groundwater data for Yolo County. Good for engineers, probably not what most people want.
A great regional analysis of long term trends in groundwater use and status is here:
“Developing a Vision for Implementation of the Sustainable Groundwater Management Act 2014 (SGMA) for Stakeholders in Yolo County” www.yolowra.org
Track the depth to water over time in your well. Measure the depth to water about once a month, record the date, and whether the well was pumping or not on the data sheet provided below.
Download a blank monitoring sheet for your own well below.