NMWDI GWL Specification v0.0

Goals:

Develop a list of required thing and location properties for groundwater wells in SensorThings
Standardize style rules for SensorThings properties. Some potential rules:
1. All lower case
2. underscores between words
3. spell out full words for clarity
4. use nested properties instead of name qualifiers ( new addition by @Jake Ross see NMWDI GWL Specification v0.0 )

Style Guide

see NMWDI Specification Governance model | Style Guide

Agency Property Examples

USGS	Office of the State Engineer	New Mexico Bureau of Geology	City of Albuquerque

SensorThings Entity	Proposed SensorThings Field Name	SensorThings Namespace	Required? What properties cannot have null values?	Data Type `A character string or numerical value?`	Examples	Field Description	Valid Values
Locations https://github.com/NMWDI/VocabService/blob/main/schemas/v0/locations.json	name	Location	yes	`str`	NM-12345	aka site_id, PointID, etc
	description	Location	yes	`str`	Location of a groundwater well where measurements are made.	Human readable description of the location
	longitude	Location.location.coordinates	yes	`float`	-104.41497	Longitude in decimal degrees in accordance with GeoJSON format using a geographic coordinate reference system, World Geodetic System 1984, and units of decimal degrees	`-180,180`
	latitude	Location.location.coordinates	yes	`float`	33.2570077	Latitude in decimal degrees in accordance with GeoJSON format using a geographic coordinate reference system, World Geodetic System 1984, and units of decimal degrees	`-90,90`
	elevation	Location.location.coordinates	no	`float`	30.01	GeoJSON spec as height in meters above, below wgs ellipsoid	`-inf, inf`
	agency	Location.properties	yes	`str`	NMBGMR, OSE	The agency responsible for uploading this data	`nmbgmr, nmose, nmenv, nmemrd, cabq, ebid`
	location_source	Location.properties	yes	`str`	address location, map interpolation, gps, PLSS, survey	how the location was derived. May also include include details about land surface vs. measuring point	`address, map_interpolation, gps, plss, survey, unknown`
	collection_agency	Location.properties	no	`str`	NMBGMR, OSE, etc.	The agency that is collecting data	`nmbgmr, nmose, nmenv, nmemrd, cabq, ebid`
	same_as	Location.properties	no	`array[json{str,str,str}]`		ID used by another agency or organization
	.id	Location.properties.same_as	yes	`str`
	.agency	Location.properties.same_as	yes	`str`
	.url	Location.properties.same_as	no	`str`			`url_regex`
	elevation	Location.properties	no	`json{float,str,str}`		Elevation of the land surface. Note: Also distinguish the height of the measuring point (relative to the elevation) within the well “thing” description. FYI, agencies differ in their default for land surface (e.g., USGS uses reference survey points) vs. well casing (e.g., ABQ).
	.accuracy	location.properties.elevation	yes	`float`		accuracy of elevation in m (NM State plane values are in decimal feet values) - latter is used often by contractors for ABQ whereas NMBG doesn’t use state plane; FYI, well records requirement for OSE states accuracy within 5 meters	`positive real number` or `-1` use -1 if accuracy is unknown
	.source	location.properties.elevation	yes	`str`	address location, map interpolation, gps, PLSS, survey	how the location was derived.	`address, map_interpolation, gps, plss, survey, unknown`
	geoconnex	Location.properties	no	`str`	https://geoconnex.us/nmwdi/st/locations/9381		`url_regex`

Things https://github.com/NMWDI/VocabService/blob/main/schemas/v0/groundwaterlevel.things.json	name	Things	yes	`str`	Jones Well	colloquial name for well, OSE well name, or the well ID
	description	Things	yes	`str`	Groundwater well drilled or set into subsurface for the purposes of pumping water or monitoring groundwater	A description of the thing (in this case, a groundwater well)
	type	Things.properties	yes	`str`	water well	The type of thing. → consider distinguishing for irrigation well, domestic well, etc. Driller records often have an initial depth at which water is encountered and static level upon completion, but the measurement details are often +/- 5 feet.	`water well, stream gage, point of diversion`

	well_depth	Things.properties	yes	`json{float,str}`		Depth of the completed well (i.e., has casing/structure as opposed to borehole)
	.value	Things.properties.well_depth	yes	`float`	231	the total depth of the well	`positive real number`
	.units	Things.properties.well_depth	yes	`str`	ft	the units in which the well depth is measured	`ft, m`
	borehole_depth	Things.properties	no	`json{float,str}`
	.value	Things.properties.borehole_depth	yes	`float`	500	The total depth drilled, the depth of the borehole (as opposed to the depth of the completed well)
	.units	Things.properties.borehole_depth	yes	`str`	ft	the units in which the borehole depth is measured
	geologic_formation	Things.properties	no	`str`		Could/should be associated with each screen (vs. just for the entire well).
	.name	Things.properties.geologic_formation	yes	`str`	the name of the geologic formation
	.code	Things.properties.geologic_formation	no	`str`		USGS standard formation codes	3115
	.source	Things.properties.geologic_formation	yes	`str`	driller’s log	the source of the information about the geologic formation	`driller's log, soil boring log, USGS map`
	lithology	Things.properties	no	`str`	silty sand, sandy silt	a description of the lithology → could be a subfeature of the geologic formation but driller might not be viewing it as such. So better to keep this as separate.
	aquifer	Things.properties	no	`str`		not always the same as geologic_formation. Sometimes aquifers can span multiple geologic formations; latter can also serve as aquitards, etc. Aquifer details could be specific to a screening depth.
	.name	Things.properties.aquifer	no	`str`		Human readable name	SanAndres
	.code	Things.properties.aquifer	no	`int`		USGS standard aquifer code	313
	.type	Things.properties.aquifer	no	`str`			`confined, unconfined`
	.source	Things.properties.aquifer	yes	`str`			`driller, geologist, USGS map`
	casing	Things.properties	no	`json{float,str,str}`
	.diameter	Things.properties.casing	yes	`float`			`positive real number`
	.units	Things.properties.casing	yes	`str`			`in`
	.description	Things.properties.casing	no	`str`	Schedule 80 PVC	Any specific descriptive information about the casing: PVC, stainless steel etc.
	construction	Things.properties	no	`str`
	.completion_date	Things.properties.construction	no	str		finish date for OSE, completion date, end of drilling etc.
	.method	Things.properties.construction	no	str	auger, air-rotary, geoprobe etc.	similar to the drilling type, how was the well drilled?