The maps below show the locations of all stations at which the USGS has annual mean discharge data available for some years from 1907 to 2019.

Not all gaging stations have data for all years during this period.

In 1907, there was data for only one station: Gallinas Creek at Montezuma, NM.

By 1942, there was data for several stations:

In 1983, there was data from stations all throughout the basin:

In the modern day, there can be wide variations in mean discharge between years with low amounts of precipitation and those with high amounts.

2011 (Dry Year) 2019 (High snowfall in winter)