All posts by Max Stevenson

Spring 2016 Groundwater Levels

Spring 2016 groundwater levels YCFC

 

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.

Fall 2015 Groundwater Levels better than last year

Fall 2015 groundwater levels YCFC

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.

Fall Level Measurements this week! (Aug 24-28, 2015)

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.

Max Stevenson

Asst. General Manager – Resources

Yolo County Flood Control & Water Conservation District

530-662-0265 office

530-681-6004 cell

www.ycfcwcd.org

Groundwater Levels – Historical Context – data sources

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
that.)

 

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:
http://www.norcalwater.org/groundwater-assessment/