!!!!!!
!!
!
!!!!!!!
!
!
!!
!
! !!
!
!
!
!
!!!!!
!
!
!
!
!
!!!!
!
!
!!
!!
!
!
!! !!!!!!
! !!
!
!
!
!!! ! !! !
!
!!
!
!
!
!
!
!!
!!!!!!
!!
!!
! !!!
!
!!
!
!
!
!
!!!
!!
!!
!!!
!
!!
!!
!
!
!
!!
!!
!! !!!!!
!
!
!
!! !! !
!!
!
!!
!
!
!!!!
!
!
!!
!
!
!
!!
!!
! !!!!
!
!!
!!
!!
! !
!
!!!
!
!! !!
!!
!
!!!
!
!!
!!
!!!!!
! !
!
!
!
!!
!!
!
!
!
!
!
!
!!
!
!!!
!!!
!
!
!
!!
!
!
!!
!
!
!
!
!!
!
!
!
!
!
!
!!!!
!
!!
!
!
!
!!
!
!!
!
!!!
!!!
! !! !
!
!
!
!!!!
!
! !!
!!
!
!
!!!
! !! !
!
! ! !! !
!
!!
! !!!
!!!
!
!
!
!
! !
!
!!!!!
!
!
!
!!! !
!! ! !
!
!!
!!
!
!!!!!
!
!
!
!
!
!
!!!
!
!!!
!
!
!!! !!!
!
!
!
!!
!
!!
!
!!!!!!!!!!
!!
!
!!!
!!!!
!
!
!
!
!!!
!!!
!
!
!!!
!
!! !!
!
!
!!
!
!!
!
!
! !!
!
!
!!!!!!!
!!
!
!!!
!
!
!!! !!!
!!
!
!
!
!!
!!
!!!
!
!
!
! !!
!!
!
!
!!
!
!
!!
!
!
!!!!
!!
!
!!!!!! !!! !!!!
!
!!
!!!!!
!
!
!
!!
!!
!
!
!!
!!!
!
!
!
!
!!!
!!
!!
!
!!
!!!!!!
!!!
!!!!
!!
!
!!
!!
!
!!!!
!!!!
!!!
!!
!!!
!! !
!!!!
!
!!!!
!!!
!
!
!!!! !!!!!! !
!
!!!
!
!
!!!!
!!
!!
!!!!
!
!!
!
!
!
!
!!!
!!
!
!
!!!
!!
!
!
!
!!!
!!
!!
!
!!!
!! !!
!!
!
!
!!
! !
!!!
!
!
!!!! !! !!! !
!
!!!
!
!! !!
!
!
!
!
!!!! !
!
!!
!
!
!
!
!
!!!
!
!
!
!
!
!! !! !!!! !
!
!
!
!! !!!!!!
!! !! !
!
!! !! !!!
!!!! !
!
!
!
!
! !!!! !!!
!!
!!!
!
!!
!! !!!
!!!!
!
!
!!
!
!
!
!!
! !!!!!
!!
!
!
!!
!!
!!!!
!!
!
!
!
!
!!!!
!!
!
!
!
!!
!!!!
!!
!
!!! !
!!
!
!
!!
!
!
!!
!
!!
!
!!!
!!! !
!
!
!
!
!
!!
!
!
!
!
!
!
!
!
!!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!!
!
!
! !
!
!
!
!
!
!!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!
!!!
!
!
!
!
!
!
!
!!!
!!
!!!
!
!
!
!!
!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!!
!
!
!
!
!
!!
!
!
!
!!
!
!
!
!
!!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
! !!!
!
!
!
!
!
!
!
!
!!
!!
!
!!
!
!!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!
!!!
!
!
!
!!
!
!
!
!
!
!
!
!
!!
!
!
!
!
! !
!
!
!!
! !
!
!
!
!
!
!
!
!
! !
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!
!!!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!
!
!
! !!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!!
!
!
!
!
!!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!!!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!!
!!
!
!
!
!!
!
!
!
!
!!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
! !
!
!
!
!
!
!
!!
!
!
!
!!
!
!
!
!
!
!
!!!
!
!
!!
!
!
!
!
!
!
!!
!
!
!
!
!
!
!!
!
!
!
!
!
!
!!
!
!
!
!
!
!!
!!
!!
!
!
!
!!
!
!
!
!
!
!
!
!
!
! !
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!
!!!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!
!
!
!
!!!
!
!!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!
!
!
!
!
!
!
!!
!
!
!
!!
!
!
!!
!
!
Land UseAgriculture (other)
Rice Crop
Urban Areas
! Dairy Farms (2009)
Central Valley RWQCB (Region 5) Boundary
MAP 2-1 Land Use in the Central Valley
CRC_GAR_Fig2-X_LandUseCentralValley ethatche 3/8/2012
Data Sources: Land Use (California DWR 2010); Dairy Farms (LSCE 2009); Basemap (ESRI 2011). Datum is NAD83.
0 30 6015 Miles ¯
Rice-Specific Groundwater Assessment Report
Butte County
Lake County
Plumas
Placer County
Glenn County
El Dorado County
Colusa County
Yolo County
Tehama County
Nevada County
Yuba County
Sutter County
Napa County
Sacramento County
Solano County
LegendDWR Land Use
CitrusDeciduous Fruits & NutsField CropsGrass & HayIdleNative Classes
PastureRice CropSemi-AgricultureTruck CropsUrban AreasVineyardsWater
County BoundaryGroundwater Basins
CRC_GAR_Fig2-2_LandUseinSacValley sbundy 4/30/2012
Placer County
Data Sources: Groundwater Basins, Rice Crop (California DWR 2010); Basemap, County (ESRI 2011). Datum is NAD83.
_Sacramento
CA
NV
MAP 2-2 Land Use in the Sacramento Valley
Rice-Specific Groundwater Assessment Report
0 10 205 Miles ¯
Butte County
Lake County
Plumas
Placer County
Glenn County
El Dorado County
Colusa County
Yolo County
Tehama County
Nevada County
Yuba County
Sutter County
Napa County
Sacramento County
Solano County
LegendCounty BoundaryGroundwater BasinsRice Lands (DWR) MAP 2-3
Geographic Extent of Assessment
CRC_GAR_MAP2-3_GeographicExtent mcorona1 5/29/2013
Data Sources: Groundwater Basins, Rice Crop (California DWR 2010); Basemap, County (ESRI 2011). Datum is NAD83.
Rice-Specific Groundwater Assessment Report
0 10 205 Miles ¯
Butte County
Lake County
Plumas
Placer County
Glenn County
El Dorado County
Colusa County
Yolo County
Tehama County
Nevada County
Yuba County
Sutter County
Napa County
Sacramento County
Solano County
COLUSA
YOLO
SUTTER
CORNING
EAST BUTTE
NORTH AMERICAN
RED BLUFF
SOUTH YUBA
SOUTH AMERICAN
SOLANO
WEST BUTTE
NORTH YUBA
LegendRice Land Use as Percent of GW Basin
0 - 55 - 1010 - 2020 - 3030 - 40
County BoundaryGroundwater BasinsRice Lands (DWR)
CRC_GAR_Fig2-4PercentRice sbundy 4/30/2012
Data Sources: Groundwater Basins, Rice Crop (California DWR 2010); Basemap, County (ESRI 2011). Datum is NAD83.
MAP 2-4 Percent Rice Land per Groundwater Basin
Rice-Specific Groundwater Assessment Report
0 10 205 Miles ¯
<1%
<1%
28%
38%
39%
16%
24%
35%
6%
24%
<1%
NOT TO SCALE
Sac ramen to R i ve r
Sac ram
en to R
i ve r
F e a t h e r R i v e r
CH2M HILL
N A T O M A S B A S I N
S U T T E R B A S I N
S U T T E R B U T T E S
C O L U S A B A S I N
S U T T E R B Y P A S S
Rio Linda
Sacramento
Pleasant Grove
Yuba City
Knights Landing
Woodland
WBG122011013027SAC Map_2-5.ai tdaus 06.27.2013
MAP 2-5Landforms of the Sacramento Valley between
Sacramento and the Sutter ButtesRice-Specific Groundwater Assessment Report
North
Red Bluff
Glenn
ChicoDurhamWillows
Sac ram
en to R
i ve r
B U T T E B A S I NC O L U S A
B A S I N
Colusa
WBG122011013027SAC Map_2-6.ai tdaus 06.27.2013
MAP 2-6Landforms of the Sacramento Valley between
the Sutter Buttes and Red BluffRice-Specific Groundwater Assessment Report
NorthNOT TO SCALE
S U T T E R B U T T E S
Butte County
Lake County
Plumas
Placer County
Glenn County
El Dorado County
Colusa County
Yolo County
Tehama County
Nevada County
Yuba County
Sutter County
Napa County
Sacramento County
Solano County
COLUSA
YOLO
SUTTER
CORNING
EAST BUTTE
NORTH AMERICAN
RED BLUFF
SOUTH YUBA
SOUTH AMERICAN
SOLANO
WEST BUTTE
NORTH YUBA
LegendNRCS Soil Drainage Class
Very poorly drainedPoorly drainedSomewhat poorly drainedModerately well drainedWell drainedSomewhat excessively drainedExcessively drained
County BoundaryGroundwater BasinsRice Lands (DWR)
CRC_GAR_Fig2-10_NRCSSoilDrainageClasses sbundy 10/11/2012
Data Sources: Groundwater Basins, Rice Crop (California DWR 2010); Drainage Class (NRCS 2012); Basemap, County (ESRI 2011). Datum is NAD83.
MAP 2-7 NRCS Soil
Drainage Classes
in the SVGB Rice-Specific Groundwater Assessment Report
0 10 205 Miles ¯
Butte County
Plumas County
Placer County
y
El Dorado County
Colusa County
Yolo County
ma County
Sierra County
Nevada County
Yuba County
Sutter County
Napa County
Sacramento County
Solano County
COLUSA
YOLO
SUTTER
CORNING
EAST BUTTE
NORTH AMERICAN
RED BLUFF
SOUTH YUBA
SOUTH AMERICAN
SOLANO
WEST BUTTE
NORTH YUBA
LegendCounty BoundaryGroundwater Basin
SSURGO Surface Texture Classclayclay loamcobbly clayextremely gravelly sandfine sandy loamgravelly clay loamgravelly fine sandy loamgravelly loamgravelly sandy clay loamgravelly sandy loamloamloamy sandsandy clay loamsandy loamsilt loamsilty claysilty clay loamstony sandy loamstratified loam to clay loamstratified loamy sand to fine sandy loamstratified sand to loamy sandstratified silt loam to very fine sandy loamvariablevery fine sandy loamvery gravelly fine sandy loamvery gravelly sandvery gravelly sandy loamvery stony sandnot rated or not available
MAP 2-8SSURGO Soil Textures
of Rice Lands
CRC_GAR_MAP2-8_SSURGOTexture mcorona1 5/28/2013
Data Sources: Groundwater Basins, Rice Crop (California DWR 2010); Basemap, County (ESRI 2011); Soil Texture (NRCS 2012). Datum is NAD83.
Rice-Specific Groundwater Assessment Report
0 10 205 Miles ¯
Butte County
Placer County
Glenn County
El Dorado Coun
Colusa County
Yolo County
Tehama County
Nevada County
Yuba County
Sutter County
Sacramento County
Solano County
COLUSA
YOLO
SUTTER
CORNING
EAST BUTTE
NORTH AMERICAN
RED BLUFF
SOUTH YUBA
SOUTH AMERICAN
SOLANO
WEST BUTTE
NORTH YUBA
LegendHydraulic Conductivity
LowModerately LowModerately HighHigh
Groundwater BasinsCounty Boundary MAP 2-9
Hydraulic Conductivity of Rice Land Soils
CRC_GAR_MAP2-9_SoilHydraulicConductivity lporta 7/29/2013
Rice-Specific Groundwater Assessment Report
0 10 205 Miles ¯Data Sources: SSURGO (NRCS 2012), Groundwater Basins, Rice Crop (California DWR 2010); Basemap, County (ESRI 2011). Datum is NAD83.
Butte County
Placer County
Glenn County
El Dorado Coun
Colusa County
Yolo County
Tehama County
Nevada County
Yuba County
Sutter County
Sacramento County
Solano County
COLUSA
YOLO
SUTTER
CORNING
EAST BUTTE
NORTH AMERICAN
RED BLUFF
SOUTH YUBA
SOUTH AMERICAN
SOLANO
WEST BUTTE
NORTH YUBA
LegendSoil pH
Ultra acid (pH < 3.5)Extremely acid (pH 3.5 - 4.4)Very Strongly Acid (pH 4.5 - 5.0)Strongly Acid (pH 5.1 - 5.5)Moderately Acid (pH 5.6 - 6.0)
Slightly Acid (pH 6.1 - 6.5)Neutral (pH 6.6 - 7.3)Slightly alkaline (pH 7.4 - 7.8)Moderately alkaline (pH 7.9 - 8.4)Strongly alkaline (pH 8.5 - 9.0)Very strongly alkaline (pH > 9.0)
County BoundaryGroundwater Basins
MAP 2-10pH of Rice Land Soils
CRC_GAR_MAP2-10_SoilpH lporta 7/29/2013
Rice-Specific Groundwater Assessment Report
0 10 205 Miles ¯Data Sources: SSURGO (NRCS 2012), Groundwater Basins (DWR 2010), Rice Crop (California DWR 2010); Basemap, County (ESRI 2011). Datum is NAD83.
Butte County
Placer County
Glenn County
El Dorado Coun
Colusa County
Yolo County
Tehama County
Nevada County
Yuba County
Sutter County
Sacramento County
Solano County
COLUSA
YOLO
SUTTER
CORNING
EAST BUTTE
NORTH AMERICAN
RED BLUFF
SOUTH YUBA
SOUTH AMERICAN
SOLANO
WEST BUTTE
NORTH YUBA
LegendSoil Electrical Conductivity
0 to 2 dS/m .....nonsaline2 to 4 dS/m ..... very slightly saline4 to 8 dS/m ..... slightly saline8 to 16 dS/m ..... moderately salinemore than 16 dS/m ..... strongly saline
County BoundaryGroundwater Basins
MAP 2-11Electrical Conductivity of Rice Land Soils
CRC_GAR_MAP2-11_SoilEC lporta 7/29/2013
Rice-Specific Groundwater Assessment Report
0 10 205 Miles ¯Data Sources: SSURGO (NRCS 2012), Groundwater Basins, Rice Crop (California DWR 2010); Basemap, County (ESRI 2011). Datum is NAD83.
Butte County
Placer County
Glenn County
El Dorado Coun
Colusa County
Yolo County
Tehama County
Nevada County
Yuba County
Sutter County
Sacramento County
Solano County
COLUSA
YOLO
SUTTER
CORNING
EAST BUTTE
NORTH AMERICAN
RED BLUFF
SOUTH YUBA
SOUTH AMERICAN
SOLANO
WEST BUTTE
NORTH YUBA
LegendLinear Extensibility (Shrink-Swell)
Low (0 - 3)Moderate (3 - 6)High (6 - 9)Very High (9 - 30, max is 12.4)
County BoundaryGroundwater Basins
MAP 2-12Linear Extensibility (Shrink-Swell) of Rice Land Soils
CRC_GAR_MAP2-12_ShrinkSwell lporta 7/29/2013
Rice-Specific Groundwater Assessment Report
0 10 205 Miles ¯Data Sources: SSURGO (NRCS 2012), Groundwater Basins, Rice Crop (California DWR 2010); Basemap, County (ESRI 2011). Datum is NAD83.
Butte County
nty
Plumas County
Placer County
unty
El Dorado County
Colusa County
Yolo County
ehama County
Sierra Cou
Nevada County
Yuba County
Sutter County
Napa County
Sacramento County
Solano County
COLUSA
YOLO
SUTTER
CORNING
EAST BUTTE
NORTH AMERICAN
RED BLUFF
SOUTH YUBA
SOUTH AMERICAN
SOLANO
WEST BUTTE
NORTH YUBA
LegendCounty BoundaryGroundwater Basins
LithologyAlluvium
Andesites in Sutter Buttes Area
Basalt of Coleman Forebay
Basin Deposits, Undivided
Chico Formation
Ione Formation
Laguna Formation
Lovejoy Basalt
Lower Member, Modesto Formation
Lower Member, Riverbank Formation
Marsh Deposits
Mehrten Formation
Metamorphic and Igneous Rocks
Metamorphic, Intrusive, and Sedimentary Rocks
Nomlaki Tuff Member
Peat Deposits
Putah Tuff Member
Red Bluff Formation
Rockland Ash Bed
Stream Channel Deposits
Sutter Formation of Williams and Curtis (1977)
Tailings
Tehama Formation
Tuff Breccia in Sutter Buttes Area
Turlock Lake Formation
Tuscan Formation, Undifferentiated Unit A & B
Unit A, Tuscan Formation
Unit B, Tuscan Formation
Unit C, Tuscan Formation
Unit D, Tuscan Formation
Upper Member, Modesto Formation
Upper Member, Riverbank Formation
MAP 2-13 Lithology in the SVGB
CRC_GAR_Fig2-11_Lithology in the SVGB sbundy 10/10/2012
Data Sources: Groundwater Basins, Rice Crop (California DWR 2010); NRCS; Basemap, County (ESRI 2011). Datum is NAD83.
Rice-Specific Groundwater Assessment Report
0 10 205 Miles ¯
Section 3 Study Area Description
FINAL DRAFT
3-9
Figure 3-4 Recharge Areas
WBG122011013027SAC Map_2-14.ai tdaus 06.27.2013
MAP 2-14Groundwater Recharge Areas in the
Northern Sacramento Valley Rice-Specific Groundwater Assessment Report
Note: Reproduced from Glenn County Department of Agriculture 2005.
Butte County
Lake County
Plumas
Placer County
Glenn County
El Dorado County
Colusa County
Yolo County
Tehama County
Nevada County
Yuba County
Sutter County
Napa County
Sacramento County
Solano County
COLUSA
YOLO
SUTTER
CORNING
EAST BUTTE
NORTH AMERICAN
RED BLUFF
SOUTH YUBA
SOUTH AMERICAN
SOLANO
WEST BUTTE
NORTH YUBA
LegendSWRCB Initial HVA
DPR GPAsLeachingRunoffRunoff or Leaching
County BoundaryGroundwater Basins
CRC_GAR_Fig2-12 Initial Hydrogeologic Vulnerable Areas SWRCB and DPR sbundy 10/10/2012
Data Sources: Groundwater Basins, Rice Crop (California DWR 2010); Basemap, County (ESRI 2011); SWRCB (2000); DPR (2004). Datum is NAD83.
MAP 2-15 SWRCB Initial HVAs and DPR GPAs
Rice-Specific Groundwater Assessment Report
0 10 205 Miles ¯
COLUSA
YOLO
SUTTER
CORNING
EAST BUTTE
NORTH AMERICAN
RED BLUFF
SOUTH YUBA
SOUTH AMERICAN
SOLANO
WEST BUTTE
NORTH YUBA
LegendRice within Initial SWRCB HVARice within DPR Leaching and Leaching or Runoff GPACounty BoundaryGroundwater Basins
CRC_GAR_Fig2-13 Rice within Initial Hydrogeologic Vulnerable Areas SWRCB and DPR sbundy 10/10/2012
Data Sources: Groundwater Basins, Rice Crop (California DWR 2010); Basemap, County (ESRI 2011); SWRCB (2000); DPR (2004). Datum is NAD83.
MAP 2-16 Rice Lands in
SWRCB Initial HVAs and DPR GPAs Rice-Specific Groundwater Assessment Report
0 10 205 Miles ¯