Well NA04001207ADC1 EW-31U (EW31U)
Unconfined

Co-located Well(s):
NA04001207ADC2 EW-31C (EW31C)

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Well Information Table
Common Well IDNA04001207ADC1 EW-31U
USBR Well IDEW31U
USGS Well ID374345105414001
GSDNP Well Name374345105414001
USGS Station NameNA04001207ADC1 EW-31U
USGS Construction Date09/04/1982
USGS Site TypeWell
USGS Site Use InformationObservation
USGS Groundwater Use InformationUnknown
Data Source(s)USGS, USBR
Location Data
TRSNA04001207ADC1 EW-31U
USBR TRSNA04001207ADC1
USGS TRS 1NA04001207ADC1 EW-31U
Longitude/Latitude (NAD83)-105.69493192 , 37.72927722
Longitude/Latitude Data SourceUSBOR EW well locations
USGS Longitude/Latitude (NAD83)-105.6950168 , 37.72916710
USBR Longitude/Latitude (NAD27)-105.694359529708 , 37.7292767843257
Easting, Northing RGDSS-NAD83 (US ft)193976.60 , 266970.80
USGS TopographyValley flat
USGS CountyAlamosa County
USGS Map NameMEDANO RANCH
USGS Map Scale24000
Elevation and Depth Data
Ground Elevation (ft NAVD88)7558.46
Elevation Data SourceUSBOR EW well database
USBR Ground Elevation (ft NGVD29)7554.3
USGS Ground Elevation (ft NGVD29)7554.30
1/3-Arc Second NED Ground Elevation (ft NAVD88)7558.75
1-Arc Second NED Ground Elevation (ft NAVD88)7557.20
SRTM Ground Elevation (ft NAVD88)7562.65
Total Depth (ft)45.00
USBR Total Depth (ft)45
USGS Hole Depth (ft)150.00
USGS Well Depth (ft)40.00
Model Layer1
Model Layer SourceAquifer Type
Depth of Bottom of Layer 1142
Depth of Bottom of Layer 2464
Depth of Bottom of Layer 31530
Depth of Bottom of Layer 43487
Additional Well InformationLogs, Construction
Aquifer Information
Aquifer TypeUnconfined
Aquifer Type SourceEW_AQFR
USGS Hydrologic UnitSan Luis
USGS Data AvailableWater-level (GW.LEV)
Water-level Database Information
Water-level Count460
Water-level Date Range09/11/1982 thru 09/14/2024
Monitored within the last 18 monthsYes, most recently on 09/14/2024
Depth-to-Water Range (ft)2.28 to 7.48
Water Table Elevation Range (ft NAVD88)7550.98 to 7556.18
Water-Level-Source:Number-of-MeasurementsUSGS:27 USBR:450

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Water-level Data

2019 to Present

1967 to Present

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Measurement DateDepth to
Water (ft)
Elevation
(ft NAVD88)
Data
Source(s)
09/11/19824.907553.56USBR
11/04/19824.307554.16USBR
11/30/19824.207554.26USBR
12/03/19824.277554.19USGS
12/21/19824.407554.06USBR
01/18/19834.407554.06USBR
02/15/19834.107554.36USBR
09/20/19835.307553.16USBR
10/19/19835.407553.06USBR
11/16/19835.407553.06USBR
07/11/19844.507553.96USBR
08/30/19844.727553.74USBR
09/30/19844.917553.55USBR
10/17/19844.307554.16USBR
11/20/19843.817554.65USBR
12/19/19843.617554.85USBR
01/18/19853.577554.89USBR
02/19/19853.607554.86USBR
02/18/19863.427555.04USBR
11/25/19863.207555.26USBR
06/16/19874.747553.72USBR
07/28/19876.107552.36USBR
08/24/19876.507551.96USBR
09/16/19876.217552.25USBR
10/20/19875.817552.65USBR
11/18/19875.457553.01USBR
12/16/19875.337553.13USBR
01/20/19885.197553.27USBR
02/23/19885.017553.45USBR
03/16/19884.517553.95USBR
05/25/19884.217554.25USBR
06/15/19884.837553.63USBR
07/15/19885.487552.98USBR
08/15/19886.157552.31USBR
10/26/19885.737552.73USBR
12/29/19884.937553.53USBR
02/15/19894.797553.67USBR
03/15/19893.737554.73USBR
04/15/19893.347555.12USBR
05/15/19893.627554.84USBR
06/15/19893.987554.48USBR
07/15/19894.537553.93USBR
10/15/19894.157554.31USBR
11/15/19894.407554.06USBR
12/15/19894.647553.82USBR
01/15/19904.637553.83USBR
02/15/19904.357554.11USBR
03/15/19902.897555.57USBR
04/15/19903.077555.39USBR
05/15/19903.037555.43USBR
06/15/19904.137554.33USBR
07/15/19904.827553.64USBR
08/15/19905.617552.85USBR
09/15/19906.297552.17USBR
10/15/19904.457554.01USBR
11/15/19903.877554.59USBR
12/15/19903.597554.87USBR
01/15/19914.097554.37USBR
02/15/19914.047554.42USBR
03/15/19913.287555.18USBR
04/15/19913.247555.22USBR
05/15/19913.727554.74USBR
06/15/19914.157554.31USBR
07/15/19915.107553.36USBR
08/15/19915.127553.34USBR
09/15/19915.547552.92USBR
10/10/19914.957553.51USBR
11/15/19913.287555.18USBR
12/15/19912.687555.78USBR
08/15/19925.717552.75USBR
09/15/19925.627552.84USBR
10/15/19925.487552.98USBR
11/15/19925.107553.36USBR
12/15/19924.997553.47USBR
01/15/19935.007553.46USBR
02/15/19934.627553.84USBR
03/15/19933.367555.10USBR
04/15/19933.457555.01USBR
05/15/19934.107554.36USBR
06/15/19934.547553.92USBR
07/15/19935.207553.26USBR
08/15/19935.567552.90USBR
09/15/19934.757553.71USBR
10/15/19934.967553.50USBR
11/15/19934.417554.05USBR
12/15/19934.307554.16USBR
01/15/19944.257554.21USBR
02/15/19942.747555.72USBR
03/15/19942.287556.18USBR
04/15/19942.797555.67USBR
05/15/19943.017555.45USBR
06/15/19944.547553.92USBR
07/15/19945.127553.34USBR
08/15/19945.727552.74USBR
09/15/19944.537553.93USBR
10/15/19943.937554.53USBR
11/15/19944.047554.42USGS,USBR
12/15/19943.997554.47USBR
01/15/19953.477554.99USBR
02/15/19953.047555.42USBR
03/15/19952.937555.53USBR
04/21/19952.657555.81USGS,USBR
05/15/19953.507554.96USBR
06/15/19953.537554.93USBR
07/19/19954.147554.32USGS,USBR
08/15/19954.747553.72USBR
09/15/19954.477553.99USBR
10/15/19954.067554.40USBR
11/01/19953.877554.59USGS,USBR
11/15/19953.767554.70USBR
12/15/19953.567554.90USBR
01/11/19963.447555.02USGS,USBR
02/15/19962.857555.61USGS,USBR
03/15/19962.687555.78USBR
04/25/19963.277555.19USGS,USBR
06/06/19964.487553.98USBR
07/09/19964.727553.74USBR
07/31/19965.327553.14USGS,USBR
09/05/19965.877552.59USBR
11/05/19964.547553.92USBR
11/26/19964.297554.17USBR
01/15/19973.937554.53USBR
03/07/19973.227555.24USGS,USBR
04/25/19973.367555.10USBR
06/03/19973.957554.51USBR
08/28/19974.457554.01USGS,USBR
09/04/19974.627553.84USBR
10/15/19975.337553.13USBR
11/15/19974.117554.35USBR
12/12/19973.557554.91USBR
02/02/19983.207555.26USBR
04/14/19983.047555.42USGS,USBR
05/06/19983.767554.70USBR
05/19/19984.167554.30USBR
05/21/19984.247554.22USBR
06/22/19984.617553.85USBR
08/27/19984.727553.74USBR
10/08/19985.197553.27USGS,USBR
10/14/19985.217553.25USBR
01/21/19994.147554.32USBR
03/01/19993.727554.74USBR
05/19/19993.877554.59USBR
09/21/19994.937553.53USGS,USBR
01/12/20004.377554.09USBR
01/20/20004.127554.34USBR
04/25/20003.867554.60USGS,USBR
05/19/20004.347554.12USBR
06/14/20004.657553.81USBR
07/15/20004.917553.55USBR
08/15/20005.797552.67USBR
09/08/20005.957552.51USBR
10/15/20005.447553.02USBR
11/02/20005.217553.25USGS
11/27/20005.027553.44USBR
12/15/20004.887553.58USBR
01/15/20014.647553.82USBR
02/15/20014.767553.70USBR
03/15/20013.497554.97USBR
03/29/20013.337555.13USBR
04/16/20013.887554.58USBR
05/01/20014.127554.34USGS,USBR
05/15/20014.007554.46USBR
06/15/20014.957553.51USBR
07/19/20015.657552.81USBR
08/15/20015.947552.52USBR
09/15/20016.097552.37USBR
10/04/20016.077552.39USBR
10/25/20015.677552.79USGS,USBR
11/15/20015.437553.03USBR
12/03/20015.307553.16USBR
12/15/20015.227553.24USBR
01/15/20025.107553.36USBR
02/15/20024.587553.88USBR
03/15/20024.317554.15USBR
04/15/20024.437554.03USBR
05/15/20024.827553.64USGS
05/15/20024.907553.56USBR
06/15/20025.617552.85USBR
07/15/20026.227552.24USBR
08/15/20026.767551.70USBR
09/07/20027.017551.45USBR
09/15/20026.767551.70USBR
10/15/20026.127552.34USBR
11/14/20025.737552.73USGS
11/15/20025.707552.76USBR
12/15/20025.507552.96USBR
01/15/20035.307553.16USBR
02/15/20035.117553.35USBR
03/15/20034.887553.58USBR
04/15/20034.537553.93USBR
04/16/20034.487553.98USGS
05/15/20034.817553.65USBR
06/15/20035.367553.10USBR
07/15/20036.377552.09USBR
08/15/20037.077551.39USBR
08/26/20037.207551.26USBR
09/15/20036.867551.60USBR
10/07/20036.767551.70USGS
10/15/20036.667551.80USBR
11/15/20036.127552.34USBR
12/15/20035.727552.74USBR
01/15/20045.507552.96USGS,USBR
02/15/20045.267553.20USBR
03/15/20044.917553.55USBR
04/13/20044.787553.68USGS
04/15/20044.827553.64USBR
05/15/20045.147553.32USBR
06/15/20045.987552.48USBR
07/15/20046.667551.80USBR
07/21/20046.537551.93USGS
08/15/20047.077551.39USBR
09/15/20047.487550.98USBR
10/15/20046.617551.85USBR
10/26/20046.387552.08USGS
11/15/20046.097552.37USBR
12/15/20045.767552.70USBR
01/15/20055.507552.96USBR
02/15/20055.217553.25USBR
03/15/20054.827553.64USBR
04/15/20054.687553.78USBR
05/04/20054.417554.05USBR
05/15/20054.747553.72USBR
06/15/20055.567552.90USBR
07/15/20056.447552.02USBR
07/27/20056.657551.81USGS
08/15/20056.907551.56USBR
09/15/20057.247551.22USBR
09/20/20057.317551.15USBR
10/15/20056.597551.87USBR
11/15/20056.067552.40USBR
12/15/20055.767552.70USBR
01/05/20065.537552.93USBR
01/15/20065.477552.99USBR
02/15/20065.267553.20USBR
03/15/20065.007553.46USBR
04/15/20064.877553.59USBR
04/21/20064.897553.57USBR
05/15/20065.147553.32USBR
06/15/20065.977552.49USBR
07/15/20066.187552.28USBR
07/24/20066.417552.05USBR
08/15/20065.837552.63USBR
09/08/20066.087552.38USBR
09/15/20066.187552.28USBR
10/15/20065.587552.88USBR
11/15/20065.197553.27USBR
12/15/20064.997553.47USBR
01/15/20074.907553.56USBR
02/15/20074.627553.84USBR
03/15/20074.147554.32USBR
04/15/20073.827554.64USBR
05/15/20074.307554.16USBR
06/15/20074.847553.62USBR
07/15/20075.717552.75USBR
08/15/20076.237552.23USBR
09/15/20076.817551.65USBR
10/15/20076.247552.22USBR
11/15/20075.807552.66USBR
12/15/20075.417553.05USBR
01/15/20084.827553.64USBR
02/15/20084.737553.73USBR
03/15/20084.087554.38USBR
04/15/20084.357554.11USBR
05/15/20084.727553.74USBR
06/15/20085.377553.09USBR
07/15/20086.017552.45USBR
08/15/20086.537551.93USBR
09/15/20086.867551.60USBR
10/15/20086.597551.87USBR
11/15/20085.997552.47USBR
12/15/20085.677552.79USBR
01/15/20095.487552.98USBR
02/15/20095.147553.32USBR
03/15/20094.897553.57USBR
04/15/20094.537553.93USBR
05/15/20094.867553.60USBR
06/15/20095.157553.31USBR
07/15/20094.457554.01USBR
08/15/20095.737552.73USBR
09/15/20096.097552.37USBR
10/15/20095.737552.73USBR
11/15/20095.367553.10USBR
12/15/20095.227553.24USBR
01/15/20105.037553.43USBR
02/15/20104.707553.76USBR
03/15/20104.297554.17USBR
04/15/20104.287554.18USBR
05/15/20104.597553.87USBR
06/15/20104.837553.63USBR
07/15/20105.767552.70USBR
08/15/20105.887552.58USBR
09/15/20106.447552.02USBR
10/15/20105.567552.90USBR
11/15/20105.057553.41USBR
12/15/20104.777553.69USBR
01/15/20115.037553.43USBR
02/15/20114.177554.29USBR
03/15/20113.767554.70USBR
04/15/20114.337554.13USBR
05/15/20113.967554.50USBR
06/15/20114.527553.94USBR
07/15/20115.287553.18USBR
08/15/20114.977553.49USBR
09/15/20115.727552.74USBR
10/15/20114.277554.19USBR
11/15/20114.697553.77USBR
12/15/20114.637553.83USBR
01/15/20124.757553.71USBR
02/15/20124.197554.27USBR
03/15/20123.597554.87USBR
04/15/20124.127554.34USBR
05/15/20123.897554.57USBR
06/15/20125.247553.22USBR
07/15/20125.797552.67USBR
08/15/20126.227552.24USBR
09/15/20125.727552.74USBR
10/15/20125.857552.61USBR
11/15/20125.597552.87USBR
12/15/20125.117553.35USBR
01/15/20135.157553.31USBR
02/15/20134.327554.14USBR
03/15/20133.947554.52USBR
04/15/20134.277554.19USBR
05/15/20134.517553.95USBR
06/15/20134.487553.98USBR
07/15/20135.047553.42USBR
08/15/20135.657552.81USBR
09/15/20135.457553.01USBR
10/15/20135.117553.35USBR
11/15/20135.067553.40USBR
12/15/20135.077553.39USBR
01/15/20144.847553.62USBR
02/15/20144.517553.95USBR
03/15/20143.637554.83USBR
04/15/20143.947554.52USBR
05/15/20143.727554.74USBR
06/15/20144.297554.17USBR
07/15/20144.497553.97USBR
08/15/20144.977553.49USBR
09/15/20145.737552.73USBR
10/15/20145.537552.93USBR
11/15/20144.837553.63USBR
12/15/20144.027554.44USBR
01/15/20153.797554.67USBR
02/15/20153.287555.18USBR
03/15/20153.547554.92USBR
04/15/20153.697554.77USBR
05/15/20153.247555.22USBR
06/15/20153.497554.97USBR
07/15/20153.567554.90USBR
08/15/20153.607554.86USBR
09/15/20154.967553.50USBR
10/15/20155.287553.18USBR
11/15/20154.037554.43USBR
12/15/20153.787554.68USBR
01/15/20164.347554.12USBR
02/15/20163.347555.12USBR
03/15/20163.017555.45USBR
04/15/20163.457555.01USBR
05/15/20163.357555.11USBR
06/15/20164.547553.92USBR
07/15/20165.377553.09USBR
08/15/20165.787552.68USBR
09/15/20166.307552.16USBR
10/15/20166.007552.46USBR
11/15/20165.047553.42USBR
12/15/20164.527553.94USBR
01/15/20174.597553.87USBR
02/15/20174.167554.30USBR
03/15/20174.207554.26USBR
04/15/20173.907554.56USBR
05/15/20174.287554.18USBR
06/15/20175.187553.28USBR
07/15/20176.027552.44USBR
08/15/20175.737552.73USBR
09/15/20176.007552.46USBR
10/15/20175.287553.18USBR
11/15/20175.017553.45USBR
12/15/20174.807553.66USBR
01/15/20184.787553.68USBR
02/15/20184.517553.95USBR
03/15/20184.347554.12USBR
04/15/20184.127554.34USBR
05/15/20184.377554.09USBR
06/15/20185.267553.20USBR
07/15/20186.107552.36USBR
08/15/20186.687551.78USBR
09/15/20186.797551.67USBR
10/15/20186.377552.09USBR
11/15/20185.807552.66USBR
12/15/20185.517552.95USBR
01/15/20195.237553.23USBR
02/15/20195.017553.45USBR
03/15/20194.247554.22USBR
04/15/20194.417554.05USBR
05/15/20194.587553.88USBR
06/15/20195.157553.31USBR
07/15/20195.887552.58USBR
08/15/20196.407552.06USBR
09/15/20197.027551.44USBR
10/15/20196.517551.95USBR
11/15/20195.947552.52USBR
12/15/20195.627552.84USBR
01/15/20205.407553.06USBR
02/15/20205.047553.42USBR
03/15/20204.867553.60USBR
04/15/20204.877553.59USBR
05/15/20205.227553.24USBR
06/15/20205.647552.82USBR
07/15/20206.397552.07USBR
08/15/20206.727551.74USBR
09/15/20206.637551.83USBR
10/15/20206.197552.27USBR
11/15/20205.757552.71USBR
12/15/20205.517552.95USBR
01/15/20215.347553.12USBR
02/15/20215.007553.46USBR
03/15/20214.777553.69USBR
04/15/20214.807553.66USBR
05/15/20215.087553.38USBR
06/15/20215.347553.12USBR
07/15/20215.687552.78USBR
08/15/20216.327552.14USBR
09/15/20216.777551.69USBR
10/15/20216.317552.15USBR
11/15/20215.847552.62USBR
12/15/20215.557552.91USBR
01/15/20225.357553.11USBR
02/15/20225.147553.32USBR
03/15/20224.917553.55USBR
04/15/20224.807553.66USBR
05/15/20225.177553.29USBR
06/15/20225.727552.74USBR
07/15/20225.887552.58USBR
08/15/20226.137552.33USBR
09/15/20226.387552.08USBR
10/15/20226.127552.34USBR
11/15/20225.707552.76USBR
12/15/20225.427553.04USBR
01/15/20235.177553.29USBR
02/15/20234.967553.50USBR
03/15/20234.717553.75USBR
04/15/20234.647553.82USBR
05/15/20234.737553.73USBR
06/15/20235.157553.31USBR
07/14/20236.047552.42USBR
08/15/20236.797551.67USBR
09/15/20237.077551.39USBR
10/15/20236.487551.98USBR
11/15/20236.027552.44USBR
12/15/20235.747552.72USBR
01/15/20245.547552.92USBR
02/15/20245.237553.23USBR
03/15/20245.047553.42USBR
04/15/20244.947553.52USBR
05/15/20244.847553.62USBR
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