This circulation study has developed transportation improvements for all transportation modes including automobile, transit, bicycle, pedestrian, and equestrian transportation. Although bicycle and equestrian travel is not common on the East Reservation, projects were developed to encourage future use of these modes of travel. The plan recommends transportation improvements for 5, 10, and 20 year planning horizons

The Arizona Department of Transportation, the Arizona Game & Fish Department and the Arizona State Parks Board are required to conduct a study every three years on watercraft fuel consumption and recreational watercraft usage. The fuel consumption data is collected to determine the allocation of motor vehicle fuel tax to the State Lake Improvement Fund. The information on recreational watercraft usage patterns on Arizona’s lakes and rivers is necessary, in part, to determine the distribution of SLIF funds to applicants.

This study identifies a plan of improvements for vehicular, transit, and nonmotorized transportation and outlines the specific actions necessary to implement and sustain the plan. The recommendations for these elements are based on technical analyses of existing and future conditions as well as stakeholder and public input. The Study identifies projects that establish and improve multimodal options for Nation members. The development of these suggested projects includes consideration of evaluation criteria addressing such issues as safety and connection of multimodal transportation modes throughout the Nation and to the greater region. The Study projects will be included in the Nation’s Long-Range Transportation Plan, which provides the vision for meeting the community’s transportation needs over a 20-year planning horizon.

The purpose of the Verde Valley Multimodal Transportation Study is to develop a long-range regional transportation plan to guide the implementation of transportation improvements on the roads of regional significance in the Verde Valley, including I-17, State Routes, and roads on the County Regional Road System. This Study is an update of the 1999 Verde Valley Transportation Study Update.

This document and the Geographic Information System file that is now a part of the County library of over 1000 coverages, gives the scientific community access to mapping that better differentiates perennial, ephemeral and intermittent watercourses, and provides more comprehensive coverage of shallow groundwater sources. This data is significant because riparian habitat is one of the most important and least protected of the habitat types in Pima County.

The purpose of this project was to compile information on groundwater withdrawals and surface water diversions near perennial streams, intermittent streams, and shallow groundwater areas previously identified by PAG for the SDCP. The information could be used to prioritize future investigations of potential impacts of these withdrawals and diversions on riparian and aquatic habitats for the SDCP.

Conducted for the Pima County Flood Control District by the Pima Association of Governments in order to determine if stormflows on the Cienega Creek have changed over time when analyzed in terms of frequency, volume, and seasonallity. In a data search that extends back to the 1950s, they were able to determine the daily mean flow, the flows over base, and the annual peak flows of the Cienega Creek.