status report: salinas valley groundsalinas valley ground water...
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Status Report:Status Report:Salinas Valley GroundSalinas Valley GroundSalinas Valley GroundSalinas Valley Ground
Water and SVWPWater and SVWPUCCE Irrigation and NutrientUCCE Irrigation and Nutrient
Management MeetingManagement Meetingg gg g
February 24, 2009February 24, 2009
PresentationPresentationese tat oese tat o
Salinas Valley Ground WaterSalinas Valley Ground WaterSalinas Valley Ground WaterSalinas Valley Ground WaterWhere does ground water come from?Where does ground water come from?GroundGround--water Basinswater BasinsGroundGround--water Basinswater Basins
CrossCross--Section of the SVSection of the SVCurrent Ground water LevelsCurrent Ground water LevelsCurrent Ground water LevelsCurrent Ground water Levels
Salinas Valley Water Project UpdateSalinas Valley Water Project UpdateWhy build it?Why build it?Why build it?Why build it?Nacimiento Spillway ModificationNacimiento Spillway ModificationS li Ri Di i F ilitS li Ri Di i F ilitSalinas River Diversion FacilitySalinas River Diversion Facility
Surface Water Suppliesof Monterey Countyof Monterey County
Average Annual Outflow:100 000 AF
Average Annual Outflow:250,000 AF
100,000 AF
Average Annual Outflow:60,000 AF
Ground water BasinsGround water Basins
Cross Section of theCross Section of theSalinas ValleySalinas ValleySalinas ValleySalinas Valley
HISTORIC GROUND WATER TRENDS
-20.0
PRESSURE AREA-180 FOOT AQUIFER 5 Wells
-30.0
-25.0
-40.0
-35.0at
er, i
n fe
et
-55.0
-50.0
-45.0
vera
ge D
epth
to W
a
-65.0
-60.0
55.0
Av
-75.0
-70.0
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEPOC O C J JU JU UG S
Month
1985 WY 1991 WY WY 2008 WY 2009
HISTORIC GROUND WATER TRENDS PRESSURE AREA-400 FOOT AQUIFER
11 Wells-20.0
-30.0
-25.0
-40.0
-35.0er
, in
feet
-50.0
-45.0
age
Dep
th to
Wat
e
65 0
-60.0
-55.0
Ave
ra
-75.0
-70.0
-65.0
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
Month
1985WY 1991WY WY 2008 WY 2009
HISTORIC GROUND WATER TRENDS EAST SIDE AREA
11 Wells-95.0
-110 0
-105.0
-100.0
-120.0
-115.0
-110.0
ter,
in fe
et
-135.0
-130.0
-125.0
rage
Dep
th to
Wa
-145.0
-140.0
Ave
r
-160.0
-155.0
-150.0
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEPOCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
Month
1985 WY 1991 WY WY 2008 WY 2009
HISTORIC GROUND WATER TRENDS FOREBAY AREA
10 Wells-50.0
-55.0
-65.0
-60.0
ater
, in
feet
-75.0
-70.0
rage
Dep
th to
Wa
-80.0
Ave
r
-90.0
-85.0
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
Month
1985 WY 1991WY 2008 WY 2009 WY
HISTORIC GROUND WATER TRENDS UPPER VALLEY AREA
9 Wells-30.0
-35.0
-45.0
-40.0
ter,
in fe
et
-55 0
-50.0
age
Dep
th to
Wat
-60.0
-55.0
Ave
ra
-70.0
-65.0
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEPOCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
Month
1985WY 1991WY WY 2008 WY 2009
SALINAS VALLEY GROUND WATER LEVELS 1945-2006 Annual Averages
10.0
20.0
The "0" point represents the 1944 WY when the DWR conducted the first water level survey in the Salinas Valley.
-10.0
0.0
-30.0
-20.0
hang
e in
Fee
t
-50.0
-40.0
Ch
70 0
-60.0Nacimiento Recharge Began San Antonio Recharge Began
-70.01945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005
Water Year
Pressure East Side Forebay Upper Valley
PresentationPresentationese tat oese tat o
Salinas Valley Ground WaterSalinas Valley Ground WaterSalinas Valley Ground WaterSalinas Valley Ground WaterWhere does ground water come from?Where does ground water come from?GroundGround--water Basinswater BasinsGroundGround--water Basinswater Basins
CrossCross--Section of the SVSection of the SVCurrent Ground water LevelsCurrent Ground water LevelsCurrent Ground water LevelsCurrent Ground water Levels
Salinas Valley Water Project UpdateSalinas Valley Water Project UpdateWhy build it?Why build it?Why build it?Why build it?Nacimiento Spillway ModificationNacimiento Spillway ModificationS li Ri Di i F ilitS li Ri Di i F ilitSalinas River Diversion FacilitySalinas River Diversion Facility
Cross Section of theCross Section of theSalinas ValleySalinas ValleySalinas ValleySalinas Valley
Cross SectionCross Sectionnear the Coastnear the Coastnear the Coastnear the Coast
180 Ft. Aquifer180 Ft. Aquifer
400 Ft. Aquifer400 Ft. Aquifer
Deep AquiferDeep Aquifer
Why Build It?Why Build It?SWI Front SWI Front –– Pressure 180Pressure 180--Foot AquiferFoot Aquifer
Source: MCWRA
Date: May 2006
Note: The scale and configuration of all information shown hereon are approximate and are not intended as a guide for design or survey work.
Why Build It? Why Build It? (cont.)(cont.)
SWI Front SWI Front –– Pressure 400Pressure 400--Foot AquiferFoot Aquifer
Source: MCWRA
Date: May 2006
Note: The scale and configuration of all information shown hereon are approximate and are not intended as a guide for design or survey work.
Why Build It? Why Build It? (cont.)(cont.)y u d ty u d t (co t )(co t )
SWI Solution Strategy:SWI Solution Strategy:SWI Solution StrategySWI Solution StrategyDevelop a surface water sourceDevelop a surface water sourceMove water north to reduce coastal Move water north to reduce coastal Move water north to reduce coastal Move water north to reduce coastal pumpingpumpingStop pumping along the coastStop pumping along the coastStop pumping along the coastStop pumping along the coast
Agency has implemented the following:Agency has implemented the following:Nacimiento and San Antonio ReservoirsNacimiento and San Antonio ReservoirsNacimiento and San Antonio ReservoirsNacimiento and San Antonio ReservoirsMonterey County Water Recycling ProjectsMonterey County Water Recycling ProjectsSalinas Valley Water ProjectSalinas Valley Water ProjectSalinas Valley Water ProjectSalinas Valley Water Project
Why Build It? Why Build It? (cont.)(cont.)y u d ty u d t (co t )(co t )
San Antonio ReservoirSan Antonio ReservoirCompleted in 1967Completed in 1967Lake Capacity 335,000 AFLake Capacity 335,000 AF
Nacimiento ReservoirNacimiento ReservoirCompleted in 1957Completed in 1957Lake Capacity 377,900 AFLake Capacity 377,900 AFp y ,p y ,
Why Build It? Why Build It? (cont.)(cont.)y u d ty u d t (co t )(co t )
SalinasSalinas
CastrovilleCastroville
MontereyBBay
MC Water Recycling Projects
Why Build It? Why Build It? (cont.)(cont.)
Salinas Valley Water Project
Nacimiento SpillwayModification
Salinas RiverDiversion Facility
Sister wall reinforcement
Left Bank Excavation
SummarySummarySu a ySu a y
Salinas Valley Ground WaterSalinas Valley Ground WaterSalinas Valley Ground WaterSalinas Valley Ground WaterWhere does ground water come from?Where does ground water come from?GroundGround--water Basinswater BasinsGroundGround--water Basinswater BasinsCurrent Ground water LevelsCurrent Ground water Levels
Salinas Valley Water Project UpdateSalinas Valley Water Project UpdateSalinas Valley Water Project UpdateSalinas Valley Water Project UpdateWhy it was built?Why it was built?N i i S ill M difi iN i i S ill M difi iNacimiento Spillway ModificationNacimiento Spillway ModificationSalinas River Diversion FacilitySalinas River Diversion Facility
Contact InformationContact InformationCo tact o at oCo tact o at o
Monterey County Water Resources AgencyMonterey County Water Resources AgencyMonterey County Water Resources AgencyMonterey County Water Resources Agency893 Blanco Circle893 Blanco Circle831 755 4860831 755 4860831.755.4860831.755.4860http://www.mcwra.co.monterey.ca.ushttp://www.mcwra.co.monterey.ca.us
Robert JohnsonRobert JohnsonChief of Water Resources PlanningChief of Water Resources Planning
[email protected]@co.monterey.ca.us
Questions?Questions?
“The water came in a thirty-year cycle. There would be five to six wetand wonderful years when there might be nineteen to twenty-five inchesof rain and the land would shout with grass Then would come six orof rain, and the land would shout with grass. Then would come six orseven pretty good years of twelve to sixteen inches of rain. And then the dry years would come …”
“And it never failed that during the dry years the people forgot about therich years, and during the wet years they lost all memory of the dry years.It was always that way.”y y
John Steinbeck, East of Eden
January 1, 1995
Pressure 180-Foot Aquifer
No Pumping /No New Wells
No New Wells