README.md

In markwh/streamstats: R bindings to the USGS Streamstats API

streamstats: An R package for using the USGS Streamstats API

See API documentation over here

Downloading and using (in R):

devtools::install_github("markwh/streamstats")
library(streamstats)

Demo of Basic Usage

Assuming you already have the lat-lon of an outlet, computing the contributing watershed is as easy as:

ws1 <- delineateWatershed(xlocation = -72.9249, ylocation = 42.3170, crs = 4326, 
                          includeparameters = "true", includeflowtypes = "true")

(if timeout is reached before a result is returned, you can specify it using setTimeout([number of seconds]))

Here, crs is the coordinate reference system number (ESPSG spatial reference code).

To see what it returned, the leafletWatershed function gives a simple interactive map.

leafletWatershed(ws1)

This can be written to a shapefile via the following:

writeShapefile(watershed = ws1, layer = "layer_name", dir = "ws1_shp", what = "boundary")

Other statistics can be found using the computeChars (for watershed characteristics such as basin area and land-use) and computeFlowStats (for statistics such as flow percentiles)

chars1 <- computeChars(workspaceID = ws1$workspaceID, rcode = "MA")
chars1$parameters

stats1 <- computeFlowStats(workspaceID = ws1$workspaceID, rcode = "MA", simplify = TRUE)

markwh/streamstats documentation built on Sept. 29, 2021, 8:42 a.m.