Groundwater
& Surface Water:
Understanding the Interaction
A
Guide for Watershed Partnerships
Groundwater: A Hidden
Resource.
Introduction.
Water. It's vital for all of us. We depend on its good
quality-and quantity-for drinking, recreation, use in
industry and growing crops. It also is vital to
sustaining the natural systems on and under the earth's
surface.
Groundwater is a hidden
resource. At one time, its purity and availability were
taken for granted. Now contamination and availability
are serious issues. Some interesting facts to
consider...
- Scientists estimate
groundwater accounts for more than 95% of all fresh
water available for use.
- Approximately 50% of
Americans obtain all or part of their drinking water
from groundwater.
- Nearly 95% of rural
residents rely on groundwater for their drinking
supply.
- About half of
irrigated cropland uses groundwater.
- Approximately one
third of industrial water needs are fulfilled by
using groundwater.
- About 40% of river
flow nationwide (on average) depends on groundwater.
Thus, groundwater is a
critical component of management plans developed by an
increasing number of watershed partnerships.
Groundwater ABCs.
Groundwater is the water that saturates the tiny spaces
between alluvial material (sand, gravel, silt, clay) or
the crevices or fractures in rocks.
Aeration zone:
The zone above the water table is known as the zone of
aeration (unsaturated or vadose zone). Water in the soil
(in the ground but above the water table) is referred to
as soil moisture. Spaces between soil, gravel and rock
are filled with water (suspended) and air.
Capillary water:
Just above the water table, in the aeration zone, is
capillary water that moves upward from the water table
by capillary action. This water can move slowly in any
direction, from a wet particle to a dry one. While most
plants rely on moisture from precipitation that is
present in the unsaturated zone, their roots may also
tap into capillary water or into the underlying
saturated zone.
Aquifer:
Most groundwater is found in aquifers-underground layers
of porous rock that are saturated from above or from
structures sloping toward it. Aquifer capacity is
determined by the porosity of the subsurface material
and its area. Under most of the United States, there are
two major types of aquifers: confined and unconfined.
Confined
aquifers (also known as artesian or pressure
aquifers) exist where the groundwater system is between
layers of clay, dense rock or other materials with very
low permeability.
Water in confined
aquifers may be very old, arriving millions of years
ago. It's also under more pressure than unconfined
aquifers. Thus, when tapped by a well, water is forced
up, sometimes above the soil surface. This is how a
flowing artesian well is formed.
Unconfined
aquifers are more common and do not have a
low-permeability deposit above it. Water in unconfined
aquifers may have arrived recently by percolating
through the land surface. This is why water in
unconfined aquifers is often considered very young, in
geologic time.
In fact, the top layer
of an unconfined aquifer is the water table. It's
affected by atmospheric pressure and changing hydrologic
conditions. Discharge and recharge rates depend on the
hydrologic conditions above them.
Saturation zone:
The portion that's saturated with water is called the
zone of saturation. The upper surface of this zone, open
to atmospheric pressure, is known as the water table (phreatic
surface).
Water-bearing
rocks: Several types of rocks can hold water,
including:
- Sedimentary deposits
(i.e. sand and gravel)
- Channels in
carbonate rocks (i.e. limestone)
- Lava tubes or
cooling fractures in igneous rocks
- Fractures in hard
rocks
How Groundwater and
Surface Water connect.
It's crystal clear.
Groundwater and surface water are fundamentally
interconnected. In fact, it is often difficult to
separate the two because they "feed" each
other. This is why one can contaminate the other.
A closer look.
To better understand the connection, take a closer look
at the various zones and actions. A way to study this is
by understanding how water recycles ... the hydrologic
(water) cycle.
- As rain or snow
falls to the earth's surface:
- Some water runs off
the land to rivers, lakes, streams and oceans
(surface water).
- Water also can
move into those bodies by percolation below
ground.
- Water entering
the soil can...
- infiltrate deeper to
reach groundwater
- which can discharge
to surface water or return to the surface through
wells, springs and marshes.
- Here it becomes
surface water again.
- And, upon
evaporation, it completes the cycle.
This movement of water
between the earth and the atmosphere through
evaporation, precipitation, infiltration and runoff is
continuous.
How groundwater
"feeds" surface water.
One of the most commonly used forms of groundwater comes
from unconfined shallow water table aquifers.
These aquifers are
major sources of drinking and irrigation water. They
also interact closely with streams, sometimes flowing
(discharging) water into a stream or lake and sometimes
receiving water from the stream or lake.
An unconfined aquifer
that feeds streams is said to provide the stream's
baseflow. (This is called a gaining stream.) In fact,
groundwater can be responsible for maintaining the
hydrologic balance of surface streams, springs, lakes,
wetlands and marshes.
This is why successful
watershed partnerships with a special interest in a
particular stream, lake or other surface waterbody
always have a special interest in the unconfined
aquifer, adjacent to the water body.
How surface water
"feeds" groundwater.
The source of groundwater (recharge) is through
precipitation or surface water that percolates downward.
Approximately 5-50% (depending on climate, land use,
soil type, geology and many other factors) of annual
precipitation results in groundwater recharge. In some
areas, streams literally recharge the aquifer through
stream bed infiltration, called losing streams.
Left untouched,
groundwater naturally arrives at a balance, discharging
and recharging depending on hydrologic conditions.
Defining Combined
Boundaries.
The question of
boundaries.
Partnerships using the watershed approach to protect
natural resources identify and understand the individual
resources-water, soil, air, plants, animals and
people-early in the process.
This is why watershed
partnerships select or define boundaries to address all
natural resources - not just one. They realize that
groundwater, surface water, air quality, and wildlife
and human activities all affect each other.
Occasionally watershed
partnerships run into difficulty combining boundaries of
surface water (watersheds) and recharge areas
(groundwater). If this occurs, consider combining
surface and groundwater into a single, larger area. In
other situations-for example if water is being
transferred from one watershed or aquifer to distant
users-there can be, and should be, two distinct areas.
Thus, watershed
partnerships' boundaries may combine the wellhead area,
aquifer, watershed, or many other areas depending on the
issue(s).
Who determines
watershed boundaries?
Larger sizes-ranging from the entire Missouri or Ohio
River Basins-to three nested watersheds smaller are
mapped by U.S. Geologic Survey (USGS).
Smaller areas like your
creek's watershed or a small lake's watershed have been
identified and catalogued in many states. The State
Geological Survey, USDA Natural Resources Conservation
Service, USDA Forest Service, USDI Fish & Wildlife
Service, and USDI Bureau of Reclamation are the agencies
that have identified these areas. Call your local office
for details.
Common boundaries.
Aquifers are often difficult to delineate. It requires
someone with an understanding of the aquifer, the
geology, the surface above it, and the land that drains
toward the surface.
An unconfined
aquifer area often extends to the surface
waterbody's (i.e. lake, river, estuary) watershed. When
determining an aquifer protection area, pumping
(working) wells are not considered.
The biggest risk to an
unconfined aquifer is contaminated water moving through
the permeable materials directly above it. This area is
known as the primary recharge area. Depending on the
depth and overlying geologic characteristics, travel
time from the surface to the aquifer can be relatively
short.
Less permeable deposits
located at higher elevations than the aquifer form a
secondary recharge area. These areas also recharge the
aquifer through both overland runoff and groundwater
flow. Because they are less permeable and tend to be a
greater distance from the aquifer, they often filter out
contaminants.
Additional recharge
areas to consider include an adjacent stream that
potentially contributes to the aquifer through
infiltration. When pumping wells are located near a
stream or lake, infiltration can be increased.
Infiltrating streams typically provide an aquifer with
large quantities of water and a pathway for bacteria,
viruses and other contaminants.
A confined
aquifer area may be limited to the outcrop of
the aquifer unit and its immediate contributing area.
This area may actually be isolated from the location of
water supply wells within the aquifer.
Semi-confined
aquifers may receive water from both outcrop
areas and overlying aquifers. Delineating the aquifer
protection area can be extensive and complex.
Sole-source
aquifers are delineated based on aquifer type -
confined, semi - confined or unconfined - and local
geologic and hydrologic conditions. Defined as providing
a minimum of 50% of the water for its users, sole-source
aquifers usually exist only where there simply are no
viable alternative water sources.
Wellhead
protection areas (also known as zone of
contribution and contributing areas) are the surface and
subsurface areas surrounding a well or field of wells (wellfield)
supplying a public water system.
The area is calculated
by determining the distance contaminants are reasonably
likely to move before reaching a well. Some common
methods for determining the wellhead protection area
include:
- Arbitrary fixed
radius
- Calculated fixed
radius
- Simplified variable
shapes
- Analytical method
- Numerical method
- Hydrogeologic
mapping
When selecting the best
method, consider available funds and the level of
concern. Other factors to consider include the cone of
depression and drawdown.
Surface
watersheds are defined by a simple process of
identifying the highest elevations in land that drains
to the surface waterbody (i.e. lake, pond, river,
estuary, etc.). Watersheds are all shapes and sizes,
ranging from just a few acres to several million acres
... many smaller watersheds "nested" inside a
larger watershed.
Most successful
watershed partnerships work with a manageable size yet
encompass all the different, but integrated, areas. This
enables faster measurable progress and stronger ties
between stakeholders and the waterbody they affect.
Threats to
Groundwater.
Threats to quantity.
An increased quantity of groundwater is being withdrawn
to meet the demands of a growing population. Some of the
typical threats associated with this include overdraft,
drawdown and subsidence.
Overdraft
occurs when groundwater is removed faster than recharge
can replace it. This can result in...
- A permanent loss of
a portion of its storage capacity.
- A change that can
cause water of unusable quality to contaminate good
water.
- In coastal basins,
salt water intrusion can occur.
Generally, any
withdrawal in excess of safe yield (the amount that can
be withdrawn without producing an undesirable result) is
an overdraft.
Drawdown
differs significantly from overdraft. It results in a
temporarily lowered water table generally caused by
pumping. In this situation, the water table recovers
when the supply is replenished.
Subsidence
is one of the dramatic results from overpumping. As the
water table declines, water pressure is reduced. This
causes the fine particles that held water to become
compacted. In addition to permanently reducing storage
capacity, the land above the aquifer can sink ... from a
few inches to several feet ... causing a sinkhole. This
can damage property and fields.
Threats to quality.
Inorganic compounds, pathogens and organic compounds can
harm water quality, affecting the health of humans, fish
and wildlife. Scientists continually learn more about
contaminants, their sources and prevention practices.
What's water
quality?
Each state is responsible for designating uses for
groundwater, surface waters, wetlands, etc. Designated
uses include fishable, swimmable, drinkable,
recreational, agricultural, aquatic life, and more. Each
state is also responsible for developing water quality
standards for each use.
For example, while most
rivers are designated to be used for fishing, a few
river sections are designated to be used for drinking
water.
The same is true for
groundwater. Uses are defined and standards identified.
A few groundwater uses and standards are:
| Groundwater |
Use
Standards |
| Drinking water |
Meet MCL* for
pollutants |
| Industrial
process |
Quality &
quantity criteria |
| Stream
baseflow |
Discharge
quantity & quality |
| *MCL:
Maximum Contaminant Level |
Note
that, for most groundwater uses, quality and quantity
are important, while for surface water uses, generally
quality is the primary concern (with the realization the
quantity affects quality).
Inorganic
Compounds include all compounds that do not
contain carbon. Nutrients (nitrogen and phosphorus) and
heavy metals are two examples.
- Nitrates
can cause problems in drinking water or marine
waters
- Phosphorus
can reduce uses of fresh surface waters
- Heavy metals
include selenium, arsenic, iron, manganese, sulfur,
cadmium and chromium and others. Some (iron,
manganese and arsenic) occur naturally
Pathogens,
including bacteria and viruses, have been credited with
causing more than 50% of the waterborne disease
outbreaks in the U.S. Cryptosporidium Parvum
and Giardia both commonly cause illnesses when
consumed.
Organic
Compounds include Volatile Organic Compounds (VOCs)
like benzene, toluene, xylene; semi-volatile compounds
like napthaline and phenol; PCBs and pesticides.
Potential sources.
Point sources are easily identified
because they usually come out of a "pipe."
Examples include sewage treatment plants, large
injection wells, industrial plants, livestock
facilities, landfills, and others.
Regulated by the state
water quality agency and the U.S. EPA, point sources are
issued a National Pollutant Discharge Elimination System
(NPDES) permit when they meet regulations.
Many point sources were
established generations ago, before the threat they
posed was understood. Some of these sources have been
"grandfathered" into compliance with some
regulations. Thus, you may find some point sources
located in areas that would be considered inappropriate
now.
Nonpoint sources
refer to widespread, seemingly insignificant amounts of
pollutants which, cumulatively, threaten water quality
and natural systems.
Examples of nonpoint
sources include septic systems, agriculture,
construction, grazing, forestry, recreational
activities, careless household management, lawn care,
and parking lot and other urban runoff.
Nonpoint sources are
not required to have a permit. Individually, each may
not be a serious threat, but together they may be a
significant threat.
Other sources
that aren't classified under point or nonpoint sources
include underground petroleum storage systems and many
large and small businesses like dry cleaners,
restaurants, and automotive repair shops. Although a
large number of underground storage tanks have been
removed or upgraded, a significant number remain.
Businesses can threaten groundwater with a wide variety
of potentially contaminating substances.
| Groundwater
Contaminant Sources |
| Source |
Contaminant |
| Salting
practices & storage |
Chlorides |
| Snow dumping |
Chlorides |
| Agricultural
fertilizers |
Nitrates |
| Manure
handling |
Nitrates,
pathogens |
| Home
fertilizer |
Nitrates |
| Septic systems |
Nitrates,
pathogens |
| Urban
landscapes |
Hydrocarbons,
pesticides, pathogens |
| Agricultural
dealers |
Hydrocarbons,
pesticides, nitrates |
| Agricultural
feedlots |
Nitrates,
pathogens |
| Solid waste
landfills |
Hazardous
materials |
| Industrial
uses RCRA 'C' |
Hazardous
materials |
| Industrial
uses RCRA 'D' |
Hazardous
materials |
| Small quantity
generators |
Hazardous
materials |
| Households |
Hazardous
materials |
| Gas stations |
Hydrocarbons |
| Auto repair
shops |
Hydrocarbons |
| Recycling
facilities |
Hydrocarbons |
| Auto salvage
yards |
Hydrocarbons |
| Underground
storage tanks |
Hydrocarbons |
| Industrial
floor drains |
Hydrocarbons |
| Injection
wells |
Hydrocarbons |
| Junkyards |
Hydrocarbons |
Management
Approaches.
The watershed
management approach.
A quick review of key components of the local, voluntary
watershed approach to protecting natural resources will
help you evaluate groundwater management approaches and
how they may be used in your particular situation. The
most critical component to the watershed management
approach is the involvement and consensus of all key
stakeholders (or organizations representing them) at
each step in the process. Other key components include:
- Assess natural
resources-soil, water (including groundwater),
air, plants, animals, and people.
- Identify and
prioritize problems.
- Develop measurable
objectives-based on local environmental, economic
and social goals.
- Identify and agree
upon strategies for reaching objectives.
- Implement strategies
and assess results.
Some of the activities,
as they pertain to groundwater, are described in this
guide. For example:
- Determining
boundaries of the groundwater and watershed areas is
typically part of assessment.
- Discussing existing
and future uses of water is part of setting goals.
- Defining pollutants
and sources is part of assessment, goal setting and
solution identification.
- Understanding
various tools is part of identifying and
implementing solutions.
Existing groundwater
programs.
Over the past 20 years many federal and state programs
have been developed to improve management of
groundwater. Four of the most useful can also easily be
incorporated into your watershed plan. These include:
- Comprehensive
State Groundwater Protection Program
- Sole Source
Aquifer Program
- Source Water
Protection Program
- Wellhead
Protection Program
These approaches
can be used in a complementary fashion to manage all
resources, including groundwater, for multiple
uses-ranging from human consumption to industrial
processes to maintaining ecological integrity within a
wetland.
Comprehensive
State Groundwater Protection Program is a
statewide program that looks at groundwater's uses,
including drinking water, and its role in sustaining the
health of surface waterbodies (rivers, streams,
wetlands, marshes).
The Sole Source
Aquifer Program, Source Water Protection Program, and
Wellhead Protection Program all are intended to
protect a drinking water supply. The programs generally
are compatible with the Comprehensive State
Groundwater Protection Program, but are applied to
very defined geographic areas...
- The Sole Source
Aquifer Program applies to the aquifer
boundaries.
- The Source Water
Protection Program applies to water that drains
into a reservoir (used as a drinking water source)
or intake.
- The Wellhead
Protection Program applies to defined wellhead
areas.
Special issues.
Although groundwater programs are often used within the
watershed framework, there are some issues that may
arise as you attempt to integrate them. These issues
have been listed to simply make you aware of them. Each
is best addressed through cooperation and consensus.
- Water quality use
designations often do not reflect the presence of
groundwater intakes for drinking water.
- Water quality
criteria and drinking water maximum contaminant
levels (MCLs) often are not consistent in terms of
chemical specific values and parameters.
- Minor dischargers
and permitted management measures under the NPDES
program may not sufficiently reduce the risk to
drinking water intakes.
- Where agriculture
activities are reducing drinking water quality,
changes in management practices may or may not take
a long time to result in water quality improvements
depending on weather, geography etc.
- Source water areas
for groundwater drinking supplies (wellhead areas)
generally do not coincide with surface water
drainage areas.
- Long-term drinking
water treatment may be necessary for certain
public water supply systems because of the nature of the
contaminant sources and the size of the contributing
area.
Additional
information
State Sources
- Public Health Agency
- Water Quality Agency
- Environmental Agency
Local Sources
- Natural Resource
Conservation Service
- Conservation
District
- Extension Office
- Water Utility
Management Tools.
There are many, many tools that can be used to manage
groundwater resources. Before discussing this list of
possible tools, your partnership will benefit from
designating current and future uses of groundwater. Does
it feed a lake used for swimming? Will urban growth
require it to be used for drinking water?
With this in mind, your
partnership might want to use this list of tools as a
starting place for discussion. You may use several or
may decide on another viable option.
Zoning:
Regulations are used to segregate different, and
possibly conflicting, activities into different areas of
a community. This approach can be limited in its ability
to protect groundwater due to "grandfather"
provisions.
Overlay Water
Resource Protection Districts: Similar to
zoning regulations in their goals of defining the
resource, these ordinances and bylaws map zones of
contributing boundaries and enact specific legislation
for land uses and development within these boundaries.
Prohibition of
Some Land Uses: These are not typically
considered very creative tools. However, prohibition of
land uses such as gas stations, sewage treatment plants,
landfills, or the use/storage/transport of toxic
materials is a first step towards the development of a
comprehensive groundwater protection strategy.
Special
Permitting: The special permitting process can
be used to regulate uses and structures that may
potentially degrade water and land quality.
Large Lot
Zoning: Large lot zoning seeks to limit
groundwater resource degradation by reducing the number
of buildings and septic systems within a groundwater
protection area.
Eliminating/Modifying
Septic Systems: Septic system problems can be
reduced or eliminated by extending or developing
community sewage treatment systems. Other options
include specifying minimum design requirements like
mound systems.
Transfer of
Development Rights: A government entity
prepares a plan designating land parcels from which
development rights can be transferred to other areas.
This allows land uses to be protected (i.e. for a gas
station) while assuring that these uses are outside
sensitive areas.
Growth
Control/Timing: Growth controls are used to
slow or guide a community's growth, ideally in concert
with its ability to support growth. One important
consideration is the availability of groundwater.
Performance
Standards: This assumes that any given resource
has a threshold, beyond which it deteriorates to an
unacceptable level. Performance standards assume that
most uses are allowable in a designated area, provided
that the use or uses do not and will not overload the
resource. With performance standards, it is important to
establish critical threshold limits as the bottom line
for acceptability.
Underground
Storage Tanks: Three additional protection
measures are often adopted to enhance local water
resource protection. They include:
- Prohibit new
residential underground storage tanks
- Remove existing
residential underground storage tanks
- Prohibit all new
underground storage tank installation in groundwater
and surface water management areas
Septic System
Maintenance: Septic system maintenance is
frequently overlooked. Many times the system will not
function properly, causing "breakout" of
solids at the surface, which can lead to bacterial
contamination. In addition, when systems fail, any
additives used can become contaminants.
Land Donations:
Land owners are often in the position of being able to
donate some land to the community or to a local land
trust.
Conservation
Easements: Conservation easements allow for a
limited right to use the land. Easements can effectively
protect critical lands from development.
Purchase Lands:
Many communities purchase selected parcels of land that
are deemed significant for resource protection.
Well
Construction/Closure Standards: Wells are a
direct conduit to groundwater. Standards for new well
construction, as well as identification and closure of
abandoned wells, can prevent groundwater from being
contaminated.
| Groundwater
Protection Tools |
| Technique |
Tool |
| Zoning
Districts |
Overlay
Groundwater Protection
Prohibit Various Land Uses
Special Permitting
Large Lot Zoning
Transfer of Development Rights
Cluster/PUD Design
Growth Controls/Timing
Performance Standards
Geographic Information Systems
Overlay Wetlands
Identify Local Wellhead Protection Areas |
| Subdivision
Control |
Drainage
Requirements
Growth Management in Sensitive Areas |
| Health
Regulations |
Underground
Fuel Storage Systems
Small Sewage Treatment Plants
Septic Cleaner Bans
Septic System Upgrades
Toxic & Hazardous Material Regulations
Private Well Protection |
| Voluntary
Restrictions |
Sale, Donation
or Trust
Conservation Easements
Limited Development |
| Other
non-regulatory |
Monitoring
Contingency Plans Hazardous Waste Collection
Public Education Land Banking |
| Groundwater
Management Practices |
| Zoning
Districts |
Management
Practices |
| Groundwater
recharge |
Impervious
area restrictions
Artificial wetlands
Grass lined channels
Impoundment structures (ponds)
Subsurface drains (tiles)
Infiltration trenches
Native tree and shrub plantings |
| Pollutant
reduction |
Buffer strips
Filter strips
Riparian zones |
| Pollution
prevention |
Soil nitrate
testing
Integrated pest management
Manure testing
Variable rate applications
Abandoned well closure |
Groundwater
IQ Questions and Answers.
Test your
groundwater IQ.
1. Which ways
can groundwater move?
a. Up
b.
Down
c.
Sideways
d.
All of the above
2. How is the
speed of groundwater movement measured?
a.
Feet per day
b.
Feet per week
c.
Feet per month
d.
Feet per year
3. How is stream
flow usually measured?
a.
Feet per second
b.
Feet per minute
c.
Feet per hour
d.
Yards per hour
4. What
determines how fast groundwater moves?
a.
Temperature
b.
Air pressure
c.
Depth of water table
d.
Size of materials
5. Can the water
table elevation change often?
a.
Yes
b. No
6. Does aquifer
storage capacity vary?
a.
Yes
b. No
Answers:
1. d. All of the
above
Although most movement is lateral (sideways), it can
move straight up or down. Groundwater simply follows the
path of least resistance by moving from higher pressure
zones to lower pressure zones.
2. d. Feet per
year
Groundwater movement is usually measured in feet per
year. This is why a pollutant that enters groundwater
requires many years before it purifies itself or is
carried to a monitored well.
3. a. Feet per
second
Water flow in streams/rivers is measured in feet per
second.
4. d. Size of
materials
Coarse materials like sand and gravel allow water to
move rapidly. (They also form excellent aquifers because
of their holding capacity.) In contrast, fine-grained
materials, like clay or shale, are very difficult for
water to move through. Thus, water moves very, very
slowly in these materials.
5. a. Yes
Water table elevations often fluctuate because of
recharge and discharge variations. They generally peak
in the winter and spring due to recharge from rains and
snow melt. Throughout the summer the water table
commonly declines due to evaporation, uptake by plants
(transpiration), increased public use, industrial use,
and crop, golf course and lawn irrigation. Elevations
commonly reach their lowest point in early fall.
6. a. Yes
Just like the water level in rivers and streams, the
amount of water in the groundwater supply can vary due
to seasonal, weather, use and other factors.
Sources of
information.
To start down the road toward an effective local
watershed partnership, you may want to read some of
these other guides from the Conservation Technology
Information Center by calling 765-494-9555. See our catalog
to order this online.
Building
Local Partnerships
Getting
to Know Your Watershed
Leading
& Communicating
Managing
Conflict
Putting
Together a Watershed Plan
Reflecting
on Lakes
Wetlands:
A Key Link in Watershed Management
Guide to Information and Resources
Nonpoint Source Water Quality Contacts
You
may also find the following publications helpful. Some
of these information sources were used to develop this
guide.
Layperson's
Guide to Ground Water, 1993, Water Education
Foundation, 717 K Street, Ste. 517, Sacramento CA 95814.
A Primer on
Ground Water, US Geological Survey Open-File
Reports Section, Federal Center, Box 25425, Denver CO
80225.
Citizen's Guide
to Ground Water Protection, April 1990, EPA
440/6-90-004, US EPA Office of Water, 401 M St. SW,
Washington, DC 20460. Order from NCEPI, 11029 Kenwood
Rd. Bldg. 5, Cincinnati, OH 45242. Fax: 513-489-8695.
Managing Ground
Water Contamination Sources in Wellhead Protection
Areas: A Priority Setting Approach, October
1991, EPA 570/9-91-023, US EPA, 401 M St. SW,
Washington, DC 20460. Order from NCEPI, 11029 Kenwood
Rd. Bldg. 5, Cincinnati, OH 45242. Fax: 513-489-8695.
National
Assessment of Contaminated Ground Water Discharge to
Surface Water, September 30 1993, US EPA Office
of Ground Water and Drinking Water, Groundwater
Protection Division, 401 M St. SW, Washington DC 20460.
Order from NCEPI, 11029 Kenwood Rd. Bldg. 5, Cincinnati,
OH 45242. Fax: 513-489-8695.
A Review of
Methods for Assessing Nonpoint Source Contaminated
Ground Water Discharge to Surface Water, April
1991, US Environmental Protection Agency, Office of
Water, 401 M St. SW, Washington, DC 20460. Order from
NCEPI, 11029 Kenwood Rd. Bldg. 5, Cincinnati, OH 45242.
Fax: 513-489-8695.
Pesticide and
Ground Water Strategy, EPA 21T-1002, US EPA,
401 M St. SW, Washington, DC 20460. Order from NCEPI,
11029 Kenwood Rd. Bldg. 5, Cincinnati, OH 45242. Fax:
513-489-8695.
National Water
Quality Inventory, 1994 Report to Congress,
December 1995. EPA 841-R-95-005. U.S. Environmental
Protection Agency, Office of Water, 401 M St. SW,
Washington, DC 20460. Order from NCEPI, 11029 Kenwood
Rd. Bldg. 5, Cincinnati, OH 45242. Fax: 513-489-8695.
Assistance is
available... Contact your local or state:
- Natural Resource
Conservation Service
- Conservation
District
- Extension Office
- Water Utility
- Water Quality Agency
About this guide...
One of a series, this guide is intended for the
layperson who wants to organize a local, voluntary
partnership to protect their watershed. This series will
not solve all your problems. It's our intention to
provide guidance for going through the process of
building a voluntary partnership, assessing your
watershed, developing a watershed management plan and
implementing that plan.
Because the
characteristics of each watershed are unique, you may
wish to select and use the portions of this and other
guides that are applicable to your particular situation.
Although the series is
written for watershed-based planning areas, the ideas
and process can be used for developing plans (such as
wildlife areas) to match the multiple concerns of the
partnership.
Regardless of the area
or issues, remember a long-term, integrated
perspective-based on a systematic, scientific
assessment-can be used to address more than one concern
at a time.
Special thanks...
Special thanks to Nancy Phillips, Environmental
Scientist, Hollis, New Hampshire, who dedicated long
hours to writing this guide. Without her help this guide
would not be possible.
Stephen Adduci, Studio
d'adduci, Los Galos, California, provided the colorful
illustrations used throughout the guide.
Special thanks also go
to the professionals (below) who carefully reviewed this
guide. Their experience and thoughtful guidance enriched
it. Their time and insight is deeply appreciated.
Jerry
Bernard
USDA Natural Resources Conservation Service
Bridget Chard
Cass County (MN)
Tom Davenport
US EPA, Region 5, Water Division
Nancy Garlitz
USDA Natural Resources Conservation Service
Susan Kaynor
Environmental Consultant
Frank Sagona
Tennessee Valley Authority
Susan Seacrest
The Groundwater Foundation
John Simons
US EPA, Office of Groundwater & Drinking Water
Perri Standish-Lee
Brown and Caldwell
Ceceilia Stetson
Minnesota Pollution Control Agency
Joan Warren
US EPA, Office of Wetlands, Oceans and Watersheds
Darlene Vogel
County of Erie (NY)
The
Know Your Watershed campaign is coordinated by the Conservation
Technology Information Center (CTIC), a nonprofit
public/private partnership dedicated to the advancement
of environmentally beneficial and economically viable
natural resource systems. It provides information and
data about agricultural and natural resource management
systems, practices and technologies. The center was
established in 1982 under the charter of the National
Association of Conservation Districts.
Yellow
River Reservoir Project - Life’s
most precious resource for plant, animal and human
survival is Water! Question
is, “Is there
enough water? Is
this a local problem, or is it a state wide problem?
We first begin to hear about a drought, this
year, as area farmers and media brought it to our
attention through newspaper and television. News articles appeared about how our
‘County
Officials were looking into ways to lessen the
hurting pain for potential flood victims who live
along the Yellow River Flood Plain and how restoring
the natural resources of the river are priorities for
Okaloosa county’. FEMA (Federal Emergency Management
Agency) currently is discouraging urban growth along
the Yellow River...
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