Agency
U.S. Geological Survey
USGS
Site identification number
423348071222501
n/a
Site name
MA-CHW 250
n/a
Site type
Well
GW
DMS latitude
423348
n/a
DMS longitude
0712225
n/a
Decimal latitude
42.5634256
n/a
Decimal longitude
-71.3731169
n/a
Latitude-longitude method
Interpolated from MAP.
M
Latitude-longitude accuracy
Accurate to + or - 1 sec.
S
Latitude-longitude datum
North American Datum of 1927
NAD27
Decimal Latitude-longitude datum
North American Datum of 1983
NAD83
District
Massachusetts
25
State
Massachusetts
25
County
Middlesex County
017
Country
US
n/a
Land net location description
n/a
Name of location map
BILLERICA
n/a
Scale of location map
24000
n/a
Altitude of Gage/land surface
197
feet
n/a
Method altitude determined
Interpolated from topographic map.
M
Altitude accuracy
5
feet
n/a
Altitude datum
National Geodetic Vertical Datum of 1929
NGVD29
Subbasin hydrologic unit
Concord
01070005
Drainage basin
n/a
Topographic setting
Valley flat
V
Flags for instruments at site
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
n/a
Date of first construction
19910109
n/a
Date site established or inventoried
19910304
n/a
Drainage area
n/a
Contributing drainage area
n/a
Time Zone abbreviation
EST
n/a
Site honors Daylight Saving Time
Y
n/a
Data reliability
Unchecked data.
U
Data-other GW files
YYYYNNNN
n/a
National aquifer
Sand and gravel aquifers (glaciated regions)
N100GLCIAL
Local aquifer
Stratified Deposits, Undifferentiated
112SRFD
Local aquifer type
Unconfined single aquifer
U
Well depth
20.
feet
n/a
Hole depth
20.
feet
n/a
Source of depth data
D
n/a
Project number
5442504200
n/a
