The 'Geospatial Attributes of Gages for Evaluating Streamflow, version II'
(GAGESII)
provides geospatial data and classifications for 9,322 stream gages maintained by the U.S. Geological Survey (USGS). findGAGESII
returns a SpatialPointsDataFrame* of GAGESII outlets within an AOI. Data comes from the USGS CIDA server and contains the following attributes:
'id' : character Internal feature number
'STAID' : character USGS NWIS Station ID
'STANAME': character USGS NWIS Station Name
'CLASS' : character Classification (Ref or Non-ref)
'AGGECOREGION' : numeric Aggregated ecoregion
'DRAIN_SQKM' : numeric Drainage area, sq km
'HUC02' : numeric Hydrologic Unit Code, 2-digit
'LAT_GAGE' : character
'LNG_GAGE' : character Longitude, decimal degrees
'STATE': character State at gage location
'HCDN_2009' : character If gage is part of HCDN-2009
'ACTIVE09' : numeric If gage active in water year 2009
'FLYRS1990' : numeric Number of complete years of flow data between 1900 and 2009
'FLYRS1950' : numeric Number of complete years of flow data between 1950 and 2009
'FLYRS1990' : numeric Number of complete years of flow data between 1990 and 2009
If basins = TRUE a SpatialPolygonsDataFrame of the gage drainage basin will also be appended
to the returned list and contain the following attributes:
'id' : character Internal feature number and data identifier
'ogr_fid' : character Internal feature number
'area': character Basin Area
'perimeter' : character Basein Parameters
'gage_id' : numeric USGS NWIS Station ID
findGAGESII(AOI = NULL, basins = FALSE, ids = FALSE)
| AOI | A Spatial* or simple features geometry, can be piped from getAOI |
|---|---|
| basins | If TRUE, returns a list of GAGESII basin in addition |
| ids | If TRUE, a vector of gage IDs is added to retuned list (default = |
a list() of minimum length 2: AOI and gagesII
# NOT RUN { #Get GAGESII outlets for AOI bas = getAOI(clip = list("UCSB", 10, 10)) %>% findGAGESII() #Get GAGESII outlets and basins for AOI bas = getAOI(clip = list("UCSB", 10, 10)) %>% findGAGESII(basins = TRUE) # }