Spatial variables attributed to 22,283 wells for ground water modeling in the National Drought project.
The following files are presented here in csv format:
File/Variable Description Units
NLCD Land Cover (2001,04,06,08,11,13,16) at well point N/A
NLCD_500mbuf Land Cover in 500 meter buffer (2001,04,06,08,11,13,16) pct
NLCDYYY: NLCD land cover category at well location.
NLCD _YYYY_500mbuf: percent of each NLCD land cover category in 500 meter around well location:
NLCD CLASSES:
"X11", Open Water
"X21", Developed Open Space
"X22", Developed Low intensity
"X23", Developed Medium intensity
"X24", Developed High intensity
"X31", Barren
"X41", Deciduous forest
"X42", Evergreen forest
"X43", Mixed forest
"X52", Shrub
"X71", Grassland
"X81", Pasture/Hay
"X82", Cropland
"X90", Woody wetlands
"X95", Emergent wetlands
"X0", NODATA
ExtOvrRecharge The ratio of the county-averaged total groundwater extraction rate in 2005 to the 2000-2013 annual average county-averaged effective recharge rates produced in this work. Values are capped at 10. dimensionless ratio
NetRecharge The 2000-2013 annual average county-averaged effective recharge rates (produced in this work) minus the county-averaged total groundwater extraction rate in 2005. Extraction data from Kenny et al., 2009. Estimated use of water in the United States in 2005. U.S. Geological Survey Circular 1344. meters / year
RC_eff
RC
TWI topographic wetness index dimensionless
Slope slope rise over run pct
hydro bfi (base fow index)
contact (baseflow residence time in the subsurface) days
ieof ( infiltration-excess overland flow, in percent of total streamflow) percent
satof (saturation excess-overland flow, in percent of total streamflow) percent
wtdepave (average water table depth) centimeters
MOHP_dsd where X is the stream order and the value is the sum of the shortest distance to the stream or associated waterbody plus the shortest distance to the matching Thiessen divide meters
MOHP_lp where X is the stream order and the value is the equal to the shortest distance to the stream or associated waterbody divided by the DSD meters
soils awc (available water capacity) fraction
bd (bulk density) grams per cubic centimeter
clayave (%clay) pct
ewt (estimated water table depth)
k_perm (ksat saturated hydraulic conductivity) um/s
kfact_up (erodibility factor in upper horizon) dimensionless
omave (organic material) percent
permave (permeability) inches per hour
siltave (%silt) pct
sandave (%sand) pct
wc_cf water content in the capillary fringe as a volumetric fraction volumetric fraction
wc_avg total average water content volumetric fraction
wc_rz average water content in the root zone volumetric fraction
tt_cf unsaturated zone traveltime for the capillary fringe years
tt_rz
unsaturated zone traveltime for the root zone
years
trans transmissivity of the saturated surficial groundwater system meters squared/day
dtw depth to water meters
tt_total total travel time
tt_mid traveltime (years) for the portion of the unsaturated profile between the root zone and the capillary fringe years
king_biekman bedrock geology at well point N/A
soller_grps lithology at well point N/A
soller_grps lithology group at well point N/A
schwietzer geology at well point N/A
Principal_Aquifer Principal aquifer at well location
mirad02_500mBuffs percent (0-1) of 500 meter well buffer that is irrigated in 2002
mirad07_500mBuffs percent (0-1) of 500 meter well buffer that is irrigated in 2007
mirad12_500mBuffs percent (0-1) of 500 meter well buffer that is irrigated in 2012
mirad17_500mBuffs percent (0-1) of 500 meter well buffer that is irrigated in 2017
mirad02_1kmBuffs percent (0-1) of 1 kilometer well buffer that is irrigated in 2002
mirad07_1kmBuffs percent (0-1) of 1 kilometer well buffer that is irrigated in 2007
mirad12_1kmmBuffs percent (0-1) of 1 kilometer well buffer that is irrigated in 2012
mirad17_1kmmBuffs percent (0-1) of 1 kilometer well buffer that is irrigated in 2017
