PAG Green Infrastructure Prioritization Tool Data Descriptions and Sources

The layers on PAG’s interactive, online map

come from a variety of sources. Several were

acquired through PAG’s regional remote

sensing project and analyses in house. Others

were used with permission by their creators.

Use the map and your desired criteria to

determine priorities and opportunities to meet

your green infrastructure project goals. Select

multiple data layers to explore the relationships

between environmental conditions and social

demographics.

The map is available at

http://gismaps.pagregion.com/PAG-

GIMap/Default.aspx

Regional Tree Canopy

PAG's analysis of 2007 NAIP imagery and 2008

PAG LiDAR, representing trees over 6 feet above

the ground, with a 1 meter resolution.

Percent Tree Canopy Cover by Census Block

PAG's analysis of tree canopy coverage

summarized to the 2010 census block geography.

Regional Surface Temperature

Eve Halper's analysis of 2008 LANDSAT thermal

data. Accurate for relative temperature comparisons

only.

Eve B. Halper, Christopher A. Scott, Stephen R.

Yool (2012), 'Correlating Vegetation, Water Use,

and Surface Temperature in a Semiarid City: A

Multiscale Analysis of the Impacts of Irrigation by

Single-Family Residences' Geographical Analysis

(2012) 44, 235–257.

Extreme Heat Event Vulnerable Population

Arizona Department of Health Services analysis of

the following U.S. Census data:

1. The number of children under the age of five;

2. The number of elderly people age 65 and

older;

3. The number of elderly people age 65 and

older who live alone;

4. The number of families whose income was

below the poverty line during the last 12

months; and

5. The number of people whose income was

below the poverty line during the last 12

months

The analysis is available here.

10,000 Tree Campaign Priorities

City of Tucson Office of Integrated Planning’s

Designated Priority Blocks for the Mayor’s 10,000

Trees Campaign: Census blocks with above

average heat exposure and below average tree

canopy in census blocks containing businesses or

residences.

Regional Pedestrian Demand Areas

From the PAG Regional Pedestrian Plan. Displays

concentrations of:

1. Pedestrian activity areas: stores, schools,

libraries, bus stops, and population density;

and

2. Populations needing access to pedestrian

facilities: children, seniors and households

without automobiles

For more information about the Regional Pedestrian

Plan, visit PAG's Bicycle and Pedestrian Program.

Tucson Bikeways

Map data maintained by PAG, Pima County and City

of Tucson. Includes shared use paths, bike

boulevards, separated bike lanes, enhanced bike

routes, bike routes, bike lanes, roads without bike

facilities, the Sun Link streetcar line and points of

interest. The map and app information are available

at PAGregion.com/Bikeways.

USDA 2013 Food Deserts

2010 U.S. Census tracts selected for limited access

to healthy and affordable food retailers, limited

income and vehicle accessibility.

The report is available here.

Shallow Groundwater Areas

From PAG’s analysis of shallow groundwater areas

in Eastern Pima County, as shown in the 2012

Shallow Groundwater Areas Report.

Shallow groundwater areas have water tables that

lie less than 50 feet below ground surface, and they

are often demarcated by indicator vegetation, such

as mesquite and cottonwood trees. These areas

benefit from nearby green infrastructure because it

helps to reduce landscape irrigation and erosion,

and increases soil moisture by slowing, spreading

and sinking stormflows.

Watersheds

U.S. Geological Survey Hydrologic Unit Code (HUC)

12 Watersheds. Available here.

Stormwater harvesting in upper parts of a watershed

is effective at reducing flood peaks downstream.

Stormwater

Pima County Regional Flood Control District

analysis of 2008 LiDAR.

These lines help you see how water flows through

your neighborhood, along the street and to the

nearest wash. Zoom in to see where water on your

property goes and to see which side of the street to

harvest or if a mid-street traffic circle may be more

appropriate.

These lines generally show how water moves

across a 2008 bare earth surface of Eastern Pima

County. Buildings, walls and underground

stormwater infrastructure (catch basins, culverts and

pipes) are not represented in the surface on which

these lines are modeled and do not influence the

location of these modeled flow lines. Minimum

accumulation area is a quarter acre.

Waste- and Reclaimed Water

Pima County GIS Library. Available here.

Check the availability of reclaimed water lines in or

near the project area.

Tucson Water Service Area

Pima County GIS Library. Available here.