Steve Ackley (Former Employee)
Science and Products
Filter Total Items: 62
Yucaipa Valley Hydrogeology
This study assesses the quality of water in the Yucaipa area, primarily in the Yucaipa plain. This hydrogeology study will aid local water purveyors in understanding and evaluating local resources and using those resources effectively in combination with water imported from northern California and from the adjacent San Bernardino area.
Low Intensity Chemical Dosing (LICD)
Rivers, wetlands, and agricultural operations supply natural organic material to the Sacramento-San Joaquin Delta (Delta) and the San Francisco Estuary. This natural organic matter provides many ecosystem benefits, but it also adversely affects drinking water. During drinking water treatment, chlorine added for purposes of pathogen control reacts with dissolved organic carbon (DOC) in the water to...
California Water Use
The U.S. Geological Survey's National Water-Use Information Program compiles the nation's water-use data at the county, state, and national levels. USGS five-year reports on national and state water-use estimates between 1950-2015 are posted on the web at: https://water.usgs.gov/watuse/. USGS water-use data for states and counties for 1985-2015 are available at: https://waterdata.usgs.gov/nwis/wu.
Wildfire Effect on Mercury Levels in Putah and Cache Creek Watersheds
A serious consequence of wildfires is the erosion which occurs during storm events in areas where vegetation has been burned away. In cases where such land is near a creek or stream, mercury (Hg) and other contaminants from the eroding soil can make their way into the waterways, impacting the health of fish and wildlife, and the quality of the water supply for local communities (see: USGS Fact...
Effects of Aquatic Vegetation on Water Quality and Residence Time in the Bay-Delta
The spread of invasive aquatic vegetation in the Sacramento-San Joaquin Delta is having a profound impact on the Delta’s natural habitat. The presence of these “aquatic weeds” has been shown to alter water velocity and increase water clarity, posing threats to native fish species, specifically the threatened Delta Smelt. These aquatic plants can also affect the foodweb by altering nutrient...
Temecula Hydrogeology
This site provides hydrologic data collected or compiled by the USGS for the Temecula area; some additional data may be available from the USGS database National Water Information System (NWIS).
Science and Products
Filter Total Items: 62
Yucaipa Valley Hydrogeology
This study assesses the quality of water in the Yucaipa area, primarily in the Yucaipa plain. This hydrogeology study will aid local water purveyors in understanding and evaluating local resources and using those resources effectively in combination with water imported from northern California and from the adjacent San Bernardino area.
Low Intensity Chemical Dosing (LICD)
Rivers, wetlands, and agricultural operations supply natural organic material to the Sacramento-San Joaquin Delta (Delta) and the San Francisco Estuary. This natural organic matter provides many ecosystem benefits, but it also adversely affects drinking water. During drinking water treatment, chlorine added for purposes of pathogen control reacts with dissolved organic carbon (DOC) in the water to...
California Water Use
The U.S. Geological Survey's National Water-Use Information Program compiles the nation's water-use data at the county, state, and national levels. USGS five-year reports on national and state water-use estimates between 1950-2015 are posted on the web at: https://water.usgs.gov/watuse/. USGS water-use data for states and counties for 1985-2015 are available at: https://waterdata.usgs.gov/nwis/wu.
Wildfire Effect on Mercury Levels in Putah and Cache Creek Watersheds
A serious consequence of wildfires is the erosion which occurs during storm events in areas where vegetation has been burned away. In cases where such land is near a creek or stream, mercury (Hg) and other contaminants from the eroding soil can make their way into the waterways, impacting the health of fish and wildlife, and the quality of the water supply for local communities (see: USGS Fact...
Effects of Aquatic Vegetation on Water Quality and Residence Time in the Bay-Delta
The spread of invasive aquatic vegetation in the Sacramento-San Joaquin Delta is having a profound impact on the Delta’s natural habitat. The presence of these “aquatic weeds” has been shown to alter water velocity and increase water clarity, posing threats to native fish species, specifically the threatened Delta Smelt. These aquatic plants can also affect the foodweb by altering nutrient...
Temecula Hydrogeology
This site provides hydrologic data collected or compiled by the USGS for the Temecula area; some additional data may be available from the USGS database National Water Information System (NWIS).