SEPA
Healthy Watersheds News
United States
Environmental Protection
Agency
EPA-841-N-12-002
Healthy Watersheds Initiative Action Plan Released
The Environmental Protection Agency (EPA) officially released The
Healthy Watersheds Initiative National Framework and Action Plan
and posted it online in October 2011. It is an outgrowth of work done
by many states over the past decade or more to protect their high quality
state waters. These states have led the way and EPA is building upon
that work to encourage these efforts across the nation. The Healthy
Watersheds Initiative National Framework and Action Plan is a
collaborative product of the EPA, other federal and state agencies and
non-governmental organizations.
As the Action Plan explains, the Healthy Watersheds Initiative is a
cost-effective non-regulatory approach to protecting our aquatic
ecosystems at the state scale that is based on the implementation of
strategic watershed protection priorities. Protection priorities are
developed collaboratively through integrated assessments of essential
ecological attributes (see figure). Protecting ecological networks of
healthy watersheds, and removing the causes of degradation, sustains
healthy watershed processes and ensures successful restoration. The
Action Plan lays out the next steps to encourage and support healthy
watersheds assessments, protection and collaboration efforts.
For more information on integrated assessments: U.S. EPA Science Advisory
Board. 2002. "Essential Ecological Attributes" in A Framework for Assessing
and Reporting on Ecological Condition
ISSUE 1
WINTER 2011-
2012
Ecological
Key attributes for assessing watershed condition
(US EPA 2002)
Healthy Watersheds Pilot Project: Assessing Green Infrastructure in
Nelson County, Virginia
The Green Infrastructure Center and the University of Virginia
partnered with Skeo Solutions to complete a green infrastructure
assessment for Nelson County, Virginia. Nelson County is a rural
county in the Chesapeake Bay Watershed, that stretches from the
Blue Ridge Mountains in the west to the James River in the east.
Land cover is 80 percent forested with high quality watersheds and
minimal impairments. Development pressures, concern for the
future costs of implementing TMDLs, and protecting the vibrant
tourism economy encouraged the identification of the essential
ecological hubs and corridors within the county. The assessment
will be used to inform the comprehensive planning effort in
Nelson County to protect high quality water resources and forests,
promote sustainable agriculture and heritage and recreation
tourism through the regulation of land use over time. Conceptual drawing of green infrastructure "hubs" or
habitat cores and their connecting corridors
For more information, visit
http://www.skeo.com/index.php/outcomes/healthy watersheds demonstration project
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PAGE 2 ISSUE 1
EPA Releases Memo to Support, Prioritize Healthy Watersheds
On September 26, 2011 Nancy Stoner, Acting Assistant Administrator to EPA's Office of Water
signed a memorandum in support of the Healthy Watersheds Initiative National Framework and
Action Plan, which was sent to all EPA regional administrators, EPA Office of Water directors,
Large Aquatic Ecosystem directors, the Association of Clean Water Administrators and the
Association of Fish and Wildlife Agencies. The memo lays out the assistant administrator's support
of Healthy Watersheds as part of a well-balanced national water program.
The memo also states that the Healthy Watersheds program can greatly improve our ability to
protect aquatic ecosystems by using a systems approach to more fully protect the chemical,
physical, and biological integrity of the nation's waters. The memo recognizes that many states
have already developed their own strategies to identify and protect healthy watersheds and
encourages EPA's regional offices to continue to work with their states and other partners to help
implement the Healthy Watersheds Initiative as a priority for the EPA's Water Program.
What Does a Healthy Watersheds Assessment Look Like?
EPA's Healthy Watersheds Initiative is non-regulatory and non-prescriptive. Furthermore, there is no regimented way to
conduct a healthy watershed assessment, nor is there an agreed-to set of metrics used to define a healthy watershed.
Rather, a state examines its watersheds at an appropriate scale through scientifically sound integrated assessments.
Comparing the relative health of watersheds across a state can help strategically prioritize protection, restoration and
monitoring actions.
A Healthy Watersheds assessment approach involves conducting integrated assessments of landscape condition, habitat,
hydrology, geomorphology, water quality, and biological condition to ascertain ecological health, establish baseline
conditions and/or define thresholds. Examples of assessments may include the development of flow-ecology relationships
using the ELOHA method (Ecological Limits of Hydrologic Alteration), or green infrastructure assessments
(identification of ecological hubs and corridors). There are many tools available to interpret the effects of landscape
alteration and other stressors. Interpreting these stressors and ecological response characteristics across the landscape
contribute toward the identification of healthy watersheds, as well as strategies to protect them.
Some states may have large amounts of detailed scientific data to conduct assessments, while others may have very
limited data. When data are limited, a desktop assessment may be more appropriate. A desktop assessment is a GIS-
based assessment using existing databases and may be useful as a screening tool for strategic planning and for laying the
groundwork for future monitoring and integrated assessments.
A healthy watersheds assessment may take on a variety of forms, but the goals of the assessments are the same: to
identify high quality areas using an integrated holistic approach; protect them from future impairment; and to increase the
number of healthy watersheds in a state. The EPA publication "Identifying and Protecting Healthy Watersheds:
Concepts, Assessments and Management Approaches" outlines examples of assessment methods and approaches. This
document is available for download at www.epa. gov/healthywatersheds
"The Association of Clean Water Administrators is pleased to be a part of EPA's development of the
Healthy Waters Initiative, as we too value holistic approaches to water quality protection and
improvement. While much attention has been appropriately paid to degraded waters in the past, it is
high time to acknowledge dedicated efforts to protect clean watersheds. EPA's highlighting of the
many benefits healthy watersheds offer ~ such as wildlife habitat protection, recreation, storm
resilience, quality drinking water, improved land use decisions, and sustainability ~ both supports and
complements state efforts." - September 2011
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PAGE 3
EPA and The Nature Conservancy Collaborate to Protect Healthy
Watersheds
The EPA and The Nature Conservancy are working together to develop six healthy watersheds program
implementation projects. These collaborative efforts leverage existing data across multiple agencies and
organizations to implement healthy watersheds assessments and strategic plans to protect healthy watersheds. Pro-
jects are being scoped in Minnesota, Wisconsin, Washington, Tennessee, Virginia and in the New England region.
Creating partnerships and leveraging existing programs across state agencies is an important component of the
Healthy Watersheds Initiative. This collaborative effort is cost-effective, provides quicker environmental results and
assures that protection and restoration is being facilitated strategically from a holistic systems perspective.
This partnership adds value to existing healthy watersheds protection at the state level by raising the visibility of
projects, sharing data, identifying gaps and strategically prioritizing efforts across multiple stakeholders.
"The Association of Fish & Wildlife Agencies supports the Healthy Watersheds Initiative and its
approach to water quality protection and improvement of our nation's aquatic resources. The
initiative will help improve wildlife and fisheries habitat and will increase opportunities for
recreational angling -key priorities of state fish and wildlife agencies."- October 2011
Healthy Watersheds Pilot Project: Hydrologic Impacts of Altered Rivers
in New Mexico
Significant alteration of New Mexico's rivers through dams, levees, diversions and reservoir construction in concert with
land use change and ground water pumping have contributed to major changes in the natural flow regime. EPA Region 6
and the Cadmus Group, Inc. developed a comprehensive review and analysis of hydrologic alteration for 32 New Mexico
stream sites across the state that characterize a range of hydrologic conditions. They analyzed long-term flow records to
identify changes in eight streamflow metrics that characterize the magnitude, frequency, duration and timing of high and
low flow conditions.
Most sites sampled in the alteration analysis demonstrate a change in at least one flow regime component. Flow alteration
was observed through the shifts in peak flow magnitude and timing, minimum flow magnitude, and/or the frequency and
duration of high and low flow events. Many of the observed flow alteration types are consistent with those expected for
sites subject to upstream diversions and groundwater withdrawal. The expected alteration response is expressed through
reduced high flow magnitude and frequency, reduced low flow magnitude, and increased low flow duration. Observed
types of flow alteration for sites located downstream of a major dam include flow stabilization and an across-the-board
decrease in flow. Flow stabilization was observed as decreased high flow magnitude/frequency and increased low flow
magnitude, as seen in the figure below, which is representative of dam-altered rivers.
20.000
Navajo Reservoir constricted
1930 19* 1950 1960 1970 1980 1990 2000 2010
Year
Monthly streamflow data for the San Juan River near Farmington site
The results of the hydrologic alteration analysis
indicate that: (1) hydrologic alteration is a wide-
spread issue throughout New Mexico; (2) a broad
range of stream types have been affected; and (3)
alteration is not limited to streams impacted by
large-scale water management projects. Protec-
tion of environmental flows in New Mexico is
essential for effective protection and restoration
efforts. Evaluating flow alteration and the re-
sponse of flows to hydrologic alteration lays a
foundation for the development of planning and
implementation goals that protect the range of
instream flow levels needed for healthy
ecological systems in New Mexico.
Read the report: The Cadmus Group. 2011. "Evaluation of hydrologic flow alteration and opportunities for environmental flow
management in New Mexico. "
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Virginia Develops Methods to Assess Watershed Health
Many states are taking significant
steps in the direction of identify-
ing and protecting healthy
watersheds. Virginia's Watershed
Integrity Model was developed in
collaboration with the Virginia
Department of Forestry as part of
the Virginia Conservation Lands
Needs Assessment to show the
relative value of land as it contrib-
utes to watershed integrity.
The Watershed Integrity Model
represents important terrestrial
features that should be conserved
for watershed integrity based on
the best available data. This in-
cludes features that support water-
shed health as well as a modified
Index of Biotic Integrity (mlBI).
The mlBI was developed by
Virginia Commonwealth
University's Center for
Environmental Studies and serves
as a stream health indicator.
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