Ground Water Quality Zones Impacted by Non-Point Source (NPS) Human Activites in BC
309 views (3 recent)Published by the Ministry of Environment and Climate Change Strategy - Water Protection and Sustainability
Licensed under Open Government Licence - British Columbia
Data and Resources
BC Geographic Warehouse Custom Downloadother
WMS getCapabilities requestwms
For use in viewers such as ESRI tools use this truncated link:...
KML Network Linkkml
For use in viewers such as Google Earth Click here for information on how to...
Spatial layers intended to provide specific ground water chemistry information to assist in the management and protection of the ground water resource.
Ground water well locations are identified onto well cards by well drillers as part of the drilling process. There is no statutory requirement for well drillers to submit these records to the Government of British Columbia, therefore not all ground water wells are represented in this dataset. It is uncertain the percentage of wells that are represented, but the best estimate is around 50%. The dataset is in a constant state of update and does not stay static for any length of time. Accuracy is defined by one of five codes (see SOURCE_ACCURACY attribute description).
|Name||Mike Wei (pointOfContact)|
|Organization||Ministry of Environment and Climate Change Strategy|
|Sub-Organization||Water Protection and Sustainability|
Access & Security
|Who can view this dataset?||Public|
|Who can download this dataset?||Public|
|Record Last Modified||2019-09-05|
Object Name: WHSE_WATER_MANAGEMENT.GW_GWQ_IMPACT_NPS_POLY
Short Name: GW_NPS_PLY
Comments: A spatial layer showing the areas, or zones, where groundwater quality (GWQ) has been impacted by human activities from non-point sources (NPS) of pollution. This spatial layer has polygonal features.
|Column Name||Short Name||Data Type||Data Precision||Comments|
|GWQ_IMPACT_NPS_ID||GWQMPCTNP1||NUMBER||10||A unique identifier for the table.|
|AQUIFER_ID||AQUIFER_ID||NUMBER||5||Sequential business key maintained by the system starting at 1. If a new|
|FEATURE_CODE||FTRCD||VARCHAR2||10||A feature code is most importantly a means of linking a feature to its name and definition. For example, the code GB15300120 on a digital geographic feature links it to the name "Lake - Dry" with the definition "A lake bed from which all water has drained or evaporated." The feature code does NOT mark when it was digitized, what dataset it belongs to, how accurate it is, what it should look like when plotted, or who is responsible for updating it. It only says what it represents in the real world. It also doesn't even matter how the lake is represented. If it is a very small lake, it may be stored as a point feature. If it is large enough to have a shape at the scale of data capture, it may be stored as an outline, or a closed polygon. The same feature code still links it to the same definition.|
|GWQ_IMPACT_NPS||GWQMPCTNPS||VARCHAR2||20||Shows the areas, or zones, where groundwater quality (GWQ) has been impacted by human activities from non-point sources (NPS) of pollution.Areas where groundwater quality is impacted by human activities were estimated by delineating indicator water quality parameters at concentrations that were greater than a threshold amount. For example, zones where Nitrate - Nitrogen (NO3 - N) concentrations greater than 3 mg/L were used in Grand Forks to delineate zones impacted by human activities. The coverage does not show areas where groundwater quality has been locally impacted by point sources of contamination or isolated contamination events or sources such as landfills, contaminated sites, nor individual sewage systems. A solid line is an interpreted zone boundary and a dotted line is an assumed zone boundary.|
|INTERPRETED_BY||NTRPRTDB||VARCHAR2||50||The person who created the initial spatial layer.|
|WHEN_CREATED||WHNCRTD||DATE||7||The date and time the entry was created.|
|WHEN_UPDATED||WHNPDTD||DATE||7||The date and time the entry was last modified.|
|WHO_CREATED||WHCRTD||VARCHAR2||30||The unique id of the user who created this entry.|
|WHO_UPDATED||WHPDTD||VARCHAR2||30||The unique id of the user who last modified this entry.|
|GEOMETRY||GEOMETRY||SDO_GEOMETRY||1||GEOMETRY is the column used to reference the spatial coordinates defining the feature.|
|OBJECTID||OBJECTID||NUMBER||38||OBJECTID is a required attribute of feature classes and object classes in a geodatabase.|
|SE_ANNO_CAD_DATA||BLOB||4000||SE_ANNO_CAD_DATA is a binary column used by spatial tools to store annotation, curve features and CAD data when using the SDO_GEOMETRY storage data type.|
|FEATURE_AREA_SQM||FEAT_AREA||NUMBER||19||FEATURE_AREA_SQM is the system calculated area of a two-dimensional polygon in square meters|
|FEATURE_LENGTH_M||FEAT_LEN||NUMBER||19||FEATURE_LENGTH_M is the system calculated length or perimeter of a geometry in meters|