Rocky Mountain Research Station

Sonoran scrub oak grows in semiarid, lower elevation chaparral, pinyon-juniper (Pinus-Juniperus spp.), shrub deserts, oak woodlands, ponderosa pine (P. ponderosa) and riparian communities of the Southwest.

The abundance of tamarisk (Tamarix ramosissima and related species) along the San Pedro and Gila River flood plains varies with differences in stream flow regimes.

Predicting the potential behavior and effects of wildland fire is an essential task in fire management. Mathematical surface fire behavior and fire effects models and prediction systems are driven in part by fuelbed inputs such as load, bulk density, fuel particle size, heat content, and moisture of extinction.

Table summarizes LANDFIRE data on the Biophysical Settings in Sonoran desert shrublands.

Creosote bush occurs throughout the Mojave, Sonoran, and Chihuahuan deserts.

Comments from each of the six public hearings are available for viewing. Note that the public comment period is now closed.

Public Hearing Comments

Draft EIS

The draft EIS public comment period closed November 7, 2019. All 30,000+ comment submittals are now under review for consideration in the compilation of the final EIS.

Media & General Info

Point of Contact
John Scaggs
Tonto National Forest

Apache Leap Special Management Area
Apache Leap SMA website