Humankind has had a huge demeanour upon on the rivers of the American West. Nearly one-half of all river miles inward the West are no longer inward their natural state. Disappearing Rivers allows y'all to explore how humans convey impacted on rivers inward the West too how far they convey been unnaturally altered.
Disappearing Rivers is an interactive map which shows the aeroplane to which all the rivers inward the American West convey been altered past times humankind. All the rivers on the map are color-coded to reverberate the per centum that each river has been altered. This is the combined per centum of floodplain too river menstruum which has been altered past times human beings. Influenza A virus subtype H5N1 drop-down card allows y'all to alter the map layer to exhibit river & flow menstruum restriction or altered floodplains instead.
If y'all pick out the 'Threats' option y'all tin sentiment dams, major human diversions, culverts too bridges on the map. If y'all pick out the option to sentiment dams hence scaled markers are added to the map. These markers exhibit the locations too the sizes of river dams inward the West.
Disappearing Rivers includes a detailed expect at 1 river to highlight the sort of change that rivers convey suffered inward the American West. Over one-half the Colorado River is dammed, diverted or otherwise altered from its natural state. Disappearing Rivers uses a storey map format to go along the Colorado River, showing how agriculture, irrigation runoff, nearby mines, dams too diversions convey combined to alter the natural dry reason of the river.
