How to calculate the drainage basin of a polygon?

How to calculate the drainage basin of a polygon?

This is essentially the function provided by r.water.outlet in GRASS except that it only looks at the drainage basin of a single cell. I figure there must be some way to do this, if only by summing together the drainage basins of all cells within the polygon.

How to see the Salt Flats from Badwater Basin?

The pool and boardwalk are easily accessible from the parking lot off Badwater Road, but the best views of the salt polygons require an easy 1.5-2 mile (2.4-3.2 km) roundtrip walk out onto the salt flats. Be sure to look up on the cliffs of the Black Mountains to the east; here you will see a sign high above, indicating sea level.

How can I find the depth to the water table in a specific location?

A convenient way to find data for your area is by using the NWIS Mapper and selecting “Groundwater Sites” in the menu on the left. Click on any red groundwater pin to access the data.

How did the Badwater Basin get its name?

Stories suggest that Badwater Basin earned its name when a mule belonging to an early surveyor refused to drink from the spring-fed pool near the present-day boardwalk. However, the water here is not truly “bad,” just very salty.

How to create beautiful watershed polygons in QGIS?

As the title sugests I am showing you, how to create beautiful watershed polygons. We will start with some raster files and use a nice GRASS tool for the main work.

What to do with half basins in QGIS?

If you’re only interested in the basins, choose a file name for the raster “half-basins” or save it after the creation by hand. Uncheck all other exports if you’re not really interested in them! In the end, just press okay and take yourself a coffee. The result might look like this: Now comes the arty-partsy part.

How to enable single flow direction in QGIS?

Enable Single Flow Direction (D8) .- Check the box. Number of cells that drain through each cell .- Select a directory and name for the accumulation raster. Drainage direction .- Select a directory and name for the direction raster.