| USGS Parameter Group | Data Types | Start Date | End Date |
|---|---|---|---|
| Information | Water-quality | 1967-05-03 | 2019-08-14 |
| Inorganics, Major, Metals | Water-quality | 1967-05-03 | 2019-08-14 |
| Inorganics, Major, Non-metals | Water-quality | 1967-05-03 | 2019-08-14 |
| Inorganics, Minor, Non-metals | Water-quality | 2001-09-18 | 2019-08-14 |
| Inorganics, Minor, metals | Water-quality | 2001-09-18 | 2019-08-14 |
| Microbiological | Water-quality | 2011-09-08 | 2019-08-14 |
| Nutrient | Water-quality | 1967-05-03 | 2019-08-14 |
| Organics, PFAS | Water-quality | 2019-08-14 | 2019-08-14 |
| Organics, other | Water-quality | 2001-09-18 | 2019-08-14 |
| Organics, pesticide | Water-quality | 2001-09-18 | 2019-08-14 |
| Physical | Groundwater Levels, Water-quality | 1966-01-01 | 2019-08-14 |
| Radiochemistry | Water-quality | 2001-09-18 | 2019-08-14 |
| Stable Isotopes | Water-quality | 2019-08-14 | 2019-08-14 |
Monitoring location 423327071364101 is associated with a Well in Middlesex County, Massachusetts. Water data back to 1966 are available online.
| Metadata Element | Location Metadata | Metadata Code |
|---|---|---|
|
Agency
|
U.S. Geological Survey | USGS |
|
Site identification number
|
423327071364101 | n/a |
|
Site name
|
MA-AYW 43 | n/a |
|
Site type
|
Well
|
GW |
| DMS latitude | 423327.44 | n/a |
| DMS longitude | 0713639.75 | n/a |
| Decimal latitude | 42.5576222 | n/a |
| Decimal longitude | -71.6110417 | n/a |
|
Latitude-longitude method
|
Mapping grade GPS unit (handheld accuracy range 12 to 40 ft) | G |
|
Latitude-longitude accuracy
|
Accurate to + or - .1 sec (Differentially-Corrected GPS). | 1 |
|
Latitude-longitude datum
|
North American Datum of 1983 | NAD83 |
| 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 | AYER, MA | n/a |
| Scale of location map | 25000 | n/a |
| Altitude of Gage/land surface | 253.00 feet | n/a |
| Method altitude determined | G | n/a |
| Altitude accuracy | 5 feet | n/a |
|
Altitude datum
|
National Geodetic Vertical Datum of 1929 | NGVD29 |
|
Subbasin hydrologic unit
|
Nashua | 01070004 |
|
Drainage basin
|
n/a | |
|
Topographic setting
|
Alluvial terrace
|
T |
| Flags for instruments at site | NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN | n/a |
|
Date of first construction
|
1966 | n/a |
| Date site established or inventoried | 20010919 | 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
|
Data have been checked by the reporting agency. | C |
| Data-other GW files | YYYYNYNN | n/a |
| National aquifer | Sand and gravel aquifers (glaciated regions) | N100GLCIAL |
| Local aquifer | Stratified Deposits, Undifferentiated | 112SRFD |
|
Local aquifer type
|
Confined single aquifer | C |
| Well depth | 93. feet | n/a |
|
Hole depth
|
93. feet | n/a |
| Source of depth data | D | n/a |
| Project number | 443305400 | n/a |