Welcome!

This website is a collection of the DRAFT data collected for the 2011 nomination of 6 high potential route segments of the Old Spanish National Historical Trail in a contract administered by the Old Spanish Trail Association on behalf of the NPS, BLM, and USFS. SHPOs and THPOs in 6 states, as well as over 100 volunteers and stakeholders participated in this project, which included historical, ethnographic, geographic, and field research conducted by Mark Henderson and Rachel Preston Prinz. The drafts were written by Mark Henderson and edited by Rachel Prinz. This data will be submitted to the National Register once OSTA's consultant (not us) completes the MPDF. We are providing this data as a service to the OSTA membership, to the various stakeholders, and on behalf of the American people... to whom this amazing trail belongs.
Please fell free to contact us, and/or use these documents in your own research, with appropriate citation.

Climate, Physiography, and Ecoregions I - Overview

How did the environment affect the way that your trail segment was used? Seasonal flooding, winter snows, desert conditons, and in the case of leaving Las Vegas - a 55 mile segment without access to water... played an important part in determining the location and the timing of trail use.

Here are the maps you'll need to do the research to discover exactly what this means for you.

US Physiographic Regions

US Ecoregions

US Climate Regions
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