King County GIS Center
King Street Center
201 S. Jackson St.
Suite 706
Seattle, WA 98104

+ 47.59909 N
- 122.33136 W

+ 47°  35' 56.72"
- 122° 19' 52.90"


Groundwater Sources

Description | Contacts | Attribute Information | Constraints

Data layer thumbnail image


Layer name: GWSOURCE
Subject category: hydro
Title: Groundwater Sources
Feature Count: 0
Feature Type: Point
Abstract: Locations of groundwater sources organized into 3 categories (as defined by the attribute SRC_TYPE) providing all known sources whether domestic or public water systems (PWS). PWS are either Group A with 15 or more connections or Group B with 2 to 14 connections, as recorded by the WA Department of Health.
Purpose: A general purpose data layer suitable for mapping or analyses involving groundwater source locations.
Status: Complete
Updated: Weekly
Time period of content: (single date,as YYYYMMDD):: 20121130
Time period of content: (date range, as YYYYMMDD):: -
Spatial reference: WA State Plane North
FGDC Documentation: Classic or FAQ
Open Data Availability: Unknown
Place Keywords: King County, WA, Pacific NW, Washington state,
Theme Keywords: public water system, groundwater, hydro, wells,
Lineage: Available
Supplemental Information: None


Maintained by:
King County Dept. of Natural Resources and Parks, Water and Lands Resources Division
Primary: Harkeerat Kang, GIS Analyst, 206-263-3734
(How to e-mail a County contact)
Secondary: KCGIS Center; This mailbox is monitored during business hours.

Attribute Information

_GW_ID_Groundwater Database table record ID number.
Range Min:1
Range Max:9462
_EQUIS_ID_Groundwater Database unique identifier for each groundwater source.Unique ID made up of letters and numbers - format varies.
_LOC_NAME_Name of a well owner or water system.Text string of location name, sometimes using property owner's/water district name.
_SRC_TYPE_Type of groundwater source.
APublic water system (well) Group A: 15 or more connections as recorded by the WA Department of Health.
BPublic water system (well) Group B: 2 to 14 connections, as recorded by the WA Department of Health.
_LOC_SRC_Method used to collect data, indicating accuracy of data location.
GPSThis site has been GPSed. The error of location can be less than 1 foot.
mapThis site has been located via a map or aerial photography. The error of this location can be up to 100 feet.
ParcelThis site has been located within the parcel of interest. The error of this location can be up to 200 feet (or more).
QTRQTRSECThis site has been placed by on the Township/Range/Section/Quarter/Quarter placement. The error of this location can be up to 500 feet.
UnknownThe error of this location is unknown.
_SURF_ELEV_Land surface elevation in feet, not top of casing elevation.
Range Min:-2.64200000000
Range Max:3003.07007000000
_DATA_SRC_Initial source of location information.
Historic - unknown sourceHistorical source.
King County DNRPKing County Department of Natural Resources.
King County WLRDKing County DNRP Water & Land Division.
Seattle - KC HealthSeattle and King County Public Health Department.
U.S. Geological SurveyUnited States Geological Survey.
WA EcologyWashington State Department of Ecology.
WA HealthWashington State Department of Health.
_GWMA_Groundwater Management Area that contains the location.
East King CountyEast King County.
Issaquah Creek ValleyIssaquah Creek Valley.
OtherNot one of the defined Groundwater Management Areas.
Redmond-Bear Creek ValleyRedmond-Bear Creek Valley.
South King CountySouth King County.
Vashon-Maury IslandVashon-Maury Island.
_WRIA_Water Resource Inventory Area.
00WRIA not defined/unknown.
07Snohomish WRIA.
08Cedar-Sammamish WRIA.
09Green-Duwamish WRIA.
10Puyallup-White WRIA.
15Kitsap WRIA.
_BASIN_NAME_King County DNRP Water & Land Division basin nameText string representing the King County WLRD hydrobasin name from DRNBASIN.
_BASIN_ID_King County DNRP Water & Land Division basin ID code.Text string of 4 letters representing the code for the King County WLRD hydrobasin.
_PIN_PIN of the parcel that contains the location.10 digit Parcel Identification Number.
_CITY_City that contains location.Text string representing incorporated area name or for unincorporated locations, the county name.
_ZIPCODE_Zipcode that contains the location.Five-digit zipcode.
_TOWNSHIP_Township that contains the location.2 digit 1 letter PLSS Township.
_RNG_Range that contains the location.2 digit and 1 letter PLSS Range.
_SECTN_Section that contains the location.2 digit PLSS Section number.
_QS_Quarter or quarter-quarter section that contains the location.PLSS quartersection (2 letters) sometimes followed by forward slash and 2 letters indicating quarter-quartersection.
_LOC_NUM_USGS Well ID number.USGS ID [format: Township/Range - 2 digit number, letter, 2 digit number).
_LOC_TYPE_Type of groundwater source.
OtherOther groundwater source.
SpringA spring is a point where groundwater flows out of the ground, and is thus where the aquifer surface meets the ground surface. Depending on how constant the source of the water is - rainfall or snowmelt that infiltrates the earth - springs can be ephemeral (intermittent), perennial (continuous) or artesian. When they leave the ground they may forms pools or streams.
SurfaceAll water naturally open to the atmosphere (rivers, lakes, reservoirs, ponds, streams, impoundments, seas, estuaries, etc.) and all springs, wells, or other collectors directly influenced by surface water.
UnknownGroundwater source type is unknown.
WellA pit, hole, or shaft sunk into the earth to tap an underground source of water.
WellfieldAn area containing more than one pumping well that provides water to a public water supply system or single owner.
_WELL_DEPTH_Depth of wells (springs and surface = 0) in feet.
Range Min:0.00000000000
Range Max:3200320.00000000000
_WADOE_TAG_ID assigned by the Washington Department of Ecology.3 letters followed by 3 digits, or unsure
_CARA_CODE_Critical Aquifer Recharge Area code.
1Any portion of a well head protection area where there is high susceptibility OR any portion of a sole source aquifer where there is high susceptibility.
2Any portion of a well head protection area where there is medium susceptibility OR any portion of a sole source aquifer where there is medium susceptibility, OR any remaining high susceptibility areas.
3Vashon/Maury areas not classed as category 1 or 2.
noneGroundwater Source is not in an area covered by the CARA
_WQ_YN_Availability of groundwater quality data.
0No water quality data available.
1Water quality data is available.
_WL_YN_Availability of water level data.
0No water level data is available.
1Water level data is available.
_WLOG_YN_Availability of well log data.
0Well log data is not available.
1Well log data is available.
_X_PLAN_Washington State Plane northing coordinate
Range Min:1220584.25000000000
Range Max:1577301.25000000000
_Y_PLAN_Washington State Plane easting coordinate
Range Min:53459.42968750000
Range Max:330339.12500000000


Access: None

Use: King County data are made available with the understanding that they shall be used exclusively by the obtainer or his/her authorized agents. Digital products may not be reproduced or redistributed in any form or by any means without the express written authorization of King County. The positional accuracy of the points in this dataset are not consistent. Users are asked to consult the LOC_SRC attribute to determine each point's positional accuracy.