Quarterly Update | April 2017
EnviroAtlas Update Bulletin
Keep up with the latest in EnviroAtlas news
IN THIS UPDATE
•	National Data Additions | Conservation Reserve Program, Recreation Demand, Impaired
Waters
•	New Communities | Minneapolis / St. Paul & Cleveland
•	Eco-Health Relationship Browser Update
•	NEW Interactive Map | Coming Soon | Sign up to beta-test!
New Data Available
EnviroAtlas has multiple new data sets available, including national data on impaired waters and
two new EnviroAtlas communities,
» Search and sort a full list of EnviroAtlas data layers.
Conservation Reserve Program Data
EnviroAtlas now includes a data layer showing approximate acres of land within each sub-
watershed (12-digit HUC) enrolled in the US Department of Agriculture's (USDA) Conservation
Reserve Program (CRP). The CRP is a land conservation program that provides financial incentives
to farmers to not use sensitive lands for agricultural production and instead plant beneficial
species.
¦ >1000

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Recreation Demand
The four national recreation demand layers are
based on the U.S. Fish and Wildlife
Service National Survey of Fishing, Hunting, and
Wildlife Associated Recreation (2011) and the
U.S. Department of Agriculture National Visitor
Use Monitoring survey. These layers are
available for the contiguous U.S. and
summarized by subwatershed (12-digit-HUC).
•	Big game hunting recreation demand
•	Bird watching recreation demand
•	Freshwater fishing recreation demand
•	Migratory bird hunting recreation
demand (pictured)
Used together or independently, these maps can help identify the estimated demand for
recreational activity to inform decisions about land conservation for hunting, fishing, or bird
watching.
EPA Impaired Waters
Section 303(d) of the Clean Water Act requires states to identify water bodies that do not support
state designated clean water uses, such as fishing, irrigation, industrial uses, or drinking water
supply, due to pollution or other impairments.
Several maps available in EnviroAtlas show a range of different impairment types,
summarized by 12-digit-HUC.
Stream
Stream
Stream
Stream
Stream
Stream
Stream
Stream
Stream
Stream
length
length
length
length
length
length
length
length
length
length
mpa
mpa
mpa
mpa
mpa
mpa
mpa
mpa
mpa
mpa
red by mercury (km)
red by metals other than mercury (km)
red by nuisance species (km)
red by nutrients (km)
red by organic enrichment or oxygen depletion (km)
red by pathogens (km)
red by pesticides (km)
red by pH, acidity, or caustic conditions (km)
red by sediment or turbidity (km)
red for temperature (km)
The Clean Water Act calls for states to develop plans for restoring their impaired
waterbodies. Information about the extent and causes of impairments could guide projects for
improving water quality or inform decisions about how best to use water resources.
» Explore these new data layers in our Interactive Map.
New Community Areas
In addition to over 300 data layers available at the national extent for the contiguous U.S,
EnviroAtlas now has a total of 18 communities in the Interactive Map. Each community has roughly
100 fine-scale metrics calculated for the area, plus a 1-meter resolution land cover product.
The latest community additions are Minneapolis / Saint Paul, Minnesota and Cleveland, Ohio.

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Minneapolis / Saint Paul, MN
The Minneapolis / St. Paul community
area includes the greater
Minneapolis/St. Paul area and portions
of Andover, Ham Lake, and Ramsey
counties.
Image: Percent of busy roadway
bordered by < 25 percent tree buffer,
by census block group. Blue indicates a
higher percentage of busy roadways
that have low tree buffer. Populations in
these block groups may have greater
exposure to near-road air pollution.
Percent of busy roadway Bordered
by < 25 percent tree buffer
[J 0.0-47.2
¦	47 3-62.6
| 62.7-748
| 74.9-86.8
¦	86.9-1000
» Read the Minneapolis / St. Paul
community summary fact sheet
Cleveland, OH
The Cleveland, Ohio community
area encompasses all or most of
almost 90 municipalities.
Image: Percent green space
within 1/4 square
kilometer. This data layer can
be used to identify
neighborhoods that have a high
level of green space overall and
underserved neighborhoods that
may benefit from green space
enhancement.
» Read the Cleveland
community summary fact sheet
Eco-Health Relationship Browser Update
The Eco-Health Relationship Browser is an easy-to-use relational browser that illustrates scientific
evidence for linkages between human health and ecosystem services.
We have updated the content in the Browser, which now has evidence from the literature through
2014. The update to include relevant literature published in 2015 and 2016 is already underway.

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Bibliography Eco-Health Relationship Browser: Public Health Linkages to Ecosystem Services
Topics: Air Quality
Click a topic bubble or choose a topic from the dropdown list above.
Hover over linkages (+) to view the relationship between elements.
Details
Description: Air Quality
As industry, urbanization, and use of
motor vehicles have increased, so too
has the concentration of pollutants in the
atmosphere- Forests and other green
spaces can reduce the atmospheric
concentrations of many of these
pollutants, including those regulated
under the U.S. Clean Air Act: particulate
matter (PM10 and PM2.5), carbon
monoxide, sulfur dioxide, nitrogen
dioxide and ozone. Due to their
significant negative health effects, their
natural removal, dilution, or
displacement can protect public health.
In heavily populated areas, even small
air-quality improvements from tree cover
are estimated to significantly reduce
incidence and severity of respiratory and
related illnesses, as well as reduce
health-care costs and days missed from
work and school. Vegetation can also
increase air pollution through the
production of pollen, fungal spores, and
volatile organic compounds, which
contribute to ozone formation.

Image: Air Quality and its linkages to a range of health outcomes, including cardiovascular
disease, low birth weight, and cognitive function.
Coming Soon
New Interactive Mapping Application
The EnviroAtlas Team is working on a new mapping application that will replace the current
Interactive Map. Release of the new mapping application is tentatively scheduled for early
summer.
Features to look forward to in the new EnviroAtlas Interactive Map include the following:
•	Improved performance and speed
•	Easier to use
•	Compatibility with mobile devices
•	Save Session option will let users save their maps and return to them later
•	Greater analysis capability and tools
The new mapping application will still be under development following its release. We need
your feedback to improve its usefulness and functionality. Contact us to become an official
beta tester.
**NOTE: EnviroAtlas web sea'ices will be removed and replaced as we migrate to the new
mapping application. Check https://www.epa.aov/enviroatlas/enviroatlas-web-services for the latest
details.

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