identifying high infiltration and ground water recharge ... · in dane county, wi kathleen...
Post on 26-Sep-2020
0 Views
Preview:
TRANSCRIPT
Identifying high infiltration and Identifying high infiltration and ground water recharge areas ground water recharge areas
in Dane County, WIin Dane County, WIKathleen Arrington, Cindy Stiles*, Kathleen Arrington, Cindy Stiles*, Steve Ventura, and John NormanSteve Ventura, and John Norman
Soil Science DepartmentSoil Science DepartmentUniversity of WisconsinUniversity of Wisconsin
Why evaluate infiltration rates?Why evaluate infiltration rates?Land use is becoming more diverse Land use is becoming more diverse
(i.e., urban expansion)(i.e., urban expansion)
Why evaluate infiltration rates?Why evaluate infiltration rates?Land use is becoming more diverse Land use is becoming more diverse
(i.e., urban expansion)(i.e., urban expansion)High infiltration/recharge areas High infiltration/recharge areas
provide valuable ecosystem services provide valuable ecosystem services in landscapesin landscapes
Why evaluate infiltration rates?Why evaluate infiltration rates?Land use is becoming more diverse Land use is becoming more diverse
(i.e., urban expansion)(i.e., urban expansion)High infiltration/recharge areas High infiltration/recharge areas
provide valuable ecosystem services provide valuable ecosystem services in landscapesin landscapes
Infiltration databases are relatively Infiltration databases are relatively datadata--poor and inconsistent, but this poor and inconsistent, but this information is a valuable resource for information is a valuable resource for community plannerscommunity planners
Suitability of soil series for septic leach fields, eastern Dane County (derived from Web Soil Survey)
Questions driving the Dane County Questions driving the Dane County infiltration/recharge area projectinfiltration/recharge area project
Can GISCan GIS--based model derived from based model derived from SSURGO/NASIS info find potential SSURGO/NASIS info find potential high infiltration/recharge areas?high infiltration/recharge areas?
Questions driving the Dane County Questions driving the Dane County infiltration/recharge area projectinfiltration/recharge area project
Can GISCan GIS--based model derived from based model derived from SSURGO?NASIS info find potential SSURGO?NASIS info find potential high infiltration/recharge areas?high infiltration/recharge areas?
Can maps of these sensitive areas Can maps of these sensitive areas become part of community/regional become part of community/regional urban development planning? urban development planning?
Questions driving the Dane County Questions driving the Dane County infiltration/recharge area projectinfiltration/recharge area project
Can GISCan GIS--based model derived from based model derived from SSURGO/NASIS info find potential SSURGO/NASIS info find potential high infiltration/recharge areas?high infiltration/recharge areas?
Can maps of these sensitive areas Can maps of these sensitive areas become part of community/regional become part of community/regional urban development planning? urban development planning?
Will developers actually utilize the Will developers actually utilize the information and what format do they information and what format do they prefer?prefer?
Objectives Objectives Map high infiltration/groundwater Map high infiltration/groundwater
recharge areas at scales useful to recharge areas at scales useful to landland--use planners, managers, and use planners, managers, and engineersengineers
Objectives Objectives Map high infiltration/groundwater Map high infiltration/groundwater
recharge areas at scales useful to recharge areas at scales useful to landland--use planners, managers, and use planners, managers, and engineersengineers
Assess the impact of development Assess the impact of development on the infiltration rates of soilson the infiltration rates of soils
Objectives Objectives Map high infiltration/groundwater Map high infiltration/groundwater
recharge areas at scales useful to recharge areas at scales useful to landland--use planners, managers, and use planners, managers, and engineersengineers
Assess the impact of development Assess the impact of development on the infiltration rates of soilson the infiltration rates of soils
Develop tools to make this Develop tools to make this information readily accessible to the information readily accessible to the publicpublic
Model development Model development Weighting and rating model combined with Weighting and rating model combined with
GIS layers to identify specific areas of GIS layers to identify specific areas of interestinterest
Model development Model development Weighting and rating model combined with Weighting and rating model combined with
GIS layers to identify specific areas of GIS layers to identify specific areas of interestinterest
Three landThree land--use categories: agricultural, use categories: agricultural, residential, recreation/open/vacant/ residential, recreation/open/vacant/ woodlandwoodland
Model development Model development Weighting and rating model combined with Weighting and rating model combined with
GIS layers to identify specific areas of GIS layers to identify specific areas of interestinterest
Three landThree land--use categories: agricultural, use categories: agricultural, residential, recreation/open/vacant/ residential, recreation/open/vacant/ woodlandwoodland
Sampling sites identified within combined Sampling sites identified within combined landland--use area and estimated surface horizon use area and estimated surface horizon infiltration potentialinfiltration potential
Model development Model development Weighting and rating model combining Weighting and rating model combining
relevant GIS layers to identify specific areas relevant GIS layers to identify specific areas of interestof interest
Three landThree land--use categories: agricultural, use categories: agricultural, residential, recreation/open/vacant/ residential, recreation/open/vacant/ woodlandwoodland
Sampling sites identified within combined Sampling sites identified within combined landland--use area and estimated surface horizon use area and estimated surface horizon infiltration potentialinfiltration potential
Information for landInformation for land--use from Dane County use from Dane County Regional Planning Commission (2005)Regional Planning Commission (2005)
Activities Activities –– Stage 1Stage 1Utilize preUtilize pre--existing GIS layers to existing GIS layers to
constrain categories of estimated soil constrain categories of estimated soil infiltration and landinfiltration and land--useuse
––Geology, topography, land cover and Geology, topography, land cover and land use historyland use history
Activities Activities –– Stage 1Stage 1Utilize preUtilize pre--existing GIS layers to existing GIS layers to
constrain categories of estimated soil constrain categories of estimated soil infiltration and landinfiltration and land--useuse
––Geology, topography, land cover and Geology, topography, land cover and land use historyland use history
Develop infiltration rate model Develop infiltration rate model suitable for field measurement suitable for field measurement methodsmethods
Activities Activities –– Stage 1 Stage 1
Utilize preUtilize pre--existing GIS layers to constrain existing GIS layers to constrain categories of estimated soil infiltration and categories of estimated soil infiltration and landland--useuse
––Geology, topography, land cover and land use Geology, topography, land cover and land use historyhistory
Develop infiltration rate model suitable Develop infiltration rate model suitable for field measurement methodsfor field measurement methods
Field measurement of Field measurement of KsatKsat using confined using confined ring ring infiltrometerinfiltrometer, lab data obtained from , lab data obtained from cores with falling head cores with falling head permeameterpermeameter
Field sampling strategy Field sampling strategy Number of sample points for each Number of sample points for each
combination land use and estimated combination land use and estimated infiltration class is approximately infiltration class is approximately proportional to land area coverage for that proportional to land area coverage for that classclass
Field sampling strategyField sampling strategyNumber of sample points for each Number of sample points for each
combination land use and estimated combination land use and estimated infiltration class is approximately infiltration class is approximately proportional to land area coverage for that proportional to land area coverage for that classclass
Starting survey area will be Dane County Starting survey area will be Dane County SoLIMSoLIM Sampling Project Watershed 58 Sampling Project Watershed 58 because class proportion within this because class proportion within this watershed is similar to Dane County properwatershed is similar to Dane County proper
Field sampling strategyField sampling strategyNumber of sample points for each Number of sample points for each
combination land use and estimated combination land use and estimated infiltration class is approximately infiltration class is approximately proportional to land area coverage for that proportional to land area coverage for that classclass
Starting survey area will be Dane County Starting survey area will be Dane County SoLIMSoLIM Sampling Project Watershed 58 Sampling Project Watershed 58 because class proportion within this because class proportion within this watershed is similar to Dane County properwatershed is similar to Dane County proper
Stratified random sampling from Stratified random sampling from SoLIMSoLIMdata points dependent upon relevant data points dependent upon relevant classesclasses
Setting Setting –– Dane County, WIDane County, WI
Setting Setting –– Dane County, WIDane County, WI
Field measurements Field measurements SurficiallySurficially confined portable confined portable infiltrometerinfiltrometer1m x 0.5m rectangular steel frame 1m x 0.5m rectangular steel frame
surrounding a portable instrumentsurrounding a portable instrumentTwo replicates per landscape sample pointTwo replicates per landscape sample pointConstant head maintained by Constant head maintained by pondedponded
water on the surface within the confines of water on the surface within the confines of the ringthe ring
Cores recovered and returned to lab for Cores recovered and returned to lab for falling head falling head permeameterpermeameter measurements of measurements of separate horizonsseparate horizons
Expected Products Expected Products Dane County interactive (Dane County interactive (DCiDCi) map ) map
data layer = general public accessdata layer = general public access
Expected Products Expected Products Dane County interactive (Dane County interactive (DCiDCi) map ) map
data layer = general public accessdata layer = general public accessExtension publication = specific land Extension publication = specific land
use managementuse management
Expected Products Expected Products Dane County interactive (Dane County interactive (DCiDCi) map ) map
data layer = general public accessdata layer = general public accessExtension publication = specific land Extension publication = specific land
use managementuse managementImpact Website for the project = Impact Website for the project =
visual scientific background for map visual scientific background for map layerslayers
Expected Products Expected Products Dane County interactive (Dane County interactive (DCiDCi) map ) map
data layer = general public accessdata layer = general public accessExtension publication = specific land Extension publication = specific land
use management informationuse management informationImpact Website for the project = Impact Website for the project =
visual scientific background for map visual scientific background for map layerslayers
Modeling information publication Modeling information publication through USGS/WNHGS for through USGS/WNHGS for knowledgeable landknowledgeable land--use managersuse managers
top related