Santa Rita Experimental Watersheds

Location

31° 50' 0.3048" N, 110° 51' 10.3104" W
Brief Site Description: 
the Santa Rita Experimental Range (SRER), the oldest continuously maintained experimental range in the western United States (est. 1903).
Detailed Site Description: 

The Southwest Research Center currently maintains eight subwatersheds within the Santa Rita Experimental Range (SRER), the oldest continuously maintained experimental range in the western United States (est. 1903). Established in 1975, these eight small watersheds are set up as paired watersheds.

Each watershed is instrumented with one recording raingage and one flume. The watersheds range in size from 1.05 ha to 4.01 ha. Four of the watersheds (#1 - 4) are in the shrub-dominated lower portion of the experimental range; the remaining four watersheds (#5 - 8) are located in the grass dominated upper portion of the experimental range.

The Santa Rita Experimental Range is currently administered by the University of Arizona, the SRER serves as a primary research location for members of the SWRC working in cooperation with the University

http://www.ars.usda.gov/Research/docs.htm?docid=10978&page=3

 

Environment - 8 subwatersheds = 4 in grassland and 4 in shrublands

Data available - precipitation, runoff, meteological

Science focus - Land use and climate change.

Representativeness - The site reflects a key Desert Southwest land  use pattern (rapid urbanization in Phoenix- Tucson), precipitation regime, and dominant  vegetation (desertscrub and grassland) which represents 90 percent of the domain.

Infrastructure - The site offers year-round accessibility,  security, and cyberinfrastructure.

Field Site Type: 
US affiliate
Registration: 
Unregistered
Network(s): 
ARS
CUAHSI
NEON
Geology: 
carbonate
other sedimentary
igneous-felsic intrusive
Soil Order: 
Aridisol
Entisol
Mollisol
Average Winter Temperature: 
4°C
Study Start Date: 
Wednesday, January 1, 1975 - 00:00
Mean Annual Precipitation: 
210millimeters / year
Average Annual Temperature: 
16°C
Average Summer Temperature: 
32°C
Hydrology: Surface water stream order: 
Unknown
Hydrology: Surface water - Stream Flow Performance: 
Unknown
Hydrology: Groundwater: 
Unknown
Land Cover: 
Shrubland
Grassland/Herbaceous
Climate: 
Temperate
Sub-Climate: 
Dry
Group visibility: 
Public - accessible to all site users