The location of a site is defined by a single pair of geographical coordinates and a river kilometer value that best represents where that site is located within the region and within the network streams in the Columbia River basin. These point locations are also tied to a hydrologic unit, represented by a 4th level HUC, and a MRR site that has been defined in PTAGIS.
The values can change and the history of those changes is tracked, but only current values are displayed in the reporting system.
|
Field |
Definition |
Domain |
|
HUC4 |
4th-level hydrologic unit code where site is located |
8-digit HUCs in Columbia Basin |
|
ParentMrrSite |
MRR fixed or stream site code where site is located |
PTAGIS MRR Site codes |
|
RKM |
PTAGIS River kilometer location code designating the location in river kilometer triplets from the mouth of the Columbia River |
string of triplets for each branch of stream from mouth to location, to nearest kilometer |
|
Latitude |
latitude coordinate of site location |
latitude in decimal degrees |
|
Longitude |
longitude coordinate of site location |
longitude in decimal degress |
|
FacId |
Facility ID from Streamnet facility spatial data set |
|
|
StreamLocationID |
LocationID from Mixed Scale Hydrography data set |
|
|
StartDate |
First date site was installed at this location |
valid datetime |
|
EndDate |
Last date site was installed at this location |
vaid datetime |
Version: 1.07
Published: 9/6/2023