Arroyo

              AVol.1 No.1
Arroyo replaces Water Resources
News Bulletin as the name of the
Water Resources Research Center's
quarterly newsletter. A new name was
chosen to go along with other recent
changes to the newsletterexpanded
coverage, enlarged mailing list, new
format. We thank those who returned
the questionnaire from the last issue
since their suggestions provided help-fi.
d ideas and insights as the newsletter
was revised.
Arroyo was chosen as a name be -
cause it seems to fit a newsletter about
ROYO
New Name, Format For Newsieffer
water iñ the arid Southwest. Water
centers in other states have newsletters
with such names as Water Current,
Ripples and even Fresh Drops. Ob-viously,
arid lands evoke a different
type of water image. Arroyo conveys
an image of water as it is known in Ari-zonauncertairi,
infrequent, often
inaccessible and occasionally coming
down in a deluge to flow away in a
flood.
Arroyo will bring you water news
from Arizona and the Southwest.
Spring 1987
Arizona
Department of
Water Resources
Developing Second
Management Plan
The
continued funding of the Cen-tral
Arizona Project depended
upon Arizona implementing water con-servation
measures in several critical
areas in the state. Water consumption
patterns in these Active Management
Areas (AMAs) will be guided between
1980 and 2025 by a series of five man-agement
plans to be developed by the
Arizona Department of Water Re-sources
(ADWR).
ADWR is now in the final stages of
preparing the Second Management
Plan (SMP) which will be in effect be-tween
1990-2000. The Groundwater
Code specifies that a plan for this
period will be promulgated no later
than January 1, 1988. The plans major
objective is to achieve significant pro-gress
toward safe yield (annual water
withdrawal balanced by annual re-charge)
for the Phoenix, Tucson, and
Prescott AMAs. The plans also intend
to maintain the agricultural economy
of the Huai AMA, while ensuring ade-quate
water supplies for future non-irrigation
purposes in the region.
The SMP will be prepared through a
three-step process. Step one includes
plan formulation, data collection, and
WATER RESOURCES RESEARCH CENTER . UNIVERSITY OF ARIZONA i
development of baseline studies of agri-cultural,
municipal, and industrial
water use patterns. Step two will con-centrate
on developing conservation
requirements for each use sector, and
identifying conservation requirements
for distribution systems. Also during
step two, the ADWR will examine wa-ter
augmentation options, including
incentives for artificial groundwater re-charge.
Finally, during this phase,
ADWR, in cooperation with the Ari-zona
Department of Health Services
(and subsequenty the Arizona Depart-ment
of Environmental Quality), will
develop strategies to assess groundwa-ter
qúality in the AMAs. The ADWR
wifi prepare the actual plan document
in step three.
A series of planning committees and
subcommittees have been developed to
guide the plan preparation process. A
Steering Committee (which includes
the ADWR's Chief Deputy Director,
Chief Counsel, Deputy Directors of En-gineering,
Adjudication, and
Administration and Water Manage-ment,
as well as the four AMA
Directors) is responsible to oversee the
process to ensure that plans are consis-tent
with legal requirements of the
Groundwater Code and ADWR goals. A
Plan Development Committee has also
been formed to review work plans from
five technical subcommittees; to iden-tify
issues needing resolution; and to
coordinate the planning process. The
five technical subcommittees (con-cerned
with agriculture, municipal and
industrial uses, water resources, aug-mentation
and reuse, and water
quality) were developed to prepare the
work programs for the SMP.
The five technical subcommittees
have made substantial progress de-veloping
the work program elements.
The Agricultural Conservation sub-committee
has determined potentials
for using effluent; determined conser-vation
requirements for irrigation
district distribution systems; developed
and reviewed crop water requirements;
identified characteristics of alternative
irrigation systems; and determined
areas of similar farming conditions and
developed maximum conservation
goals for each.
The Municipal and Industrial sub-committee
has collected water use
data from large providers; identified al-ternative
methods to achieve
conservation; determined conservation
potentials for each provider; and begun
to develop programs to achieve conser-vation.
The Water Augmentation and Reuse
sub committee has developed a priority
listing of augmentation sources for fur-ther
study. Also, for each identified
source, the subcommittee has con-ducted
a literature search; collected
data on water availability; and identi-fied
potentials for direct use and/or
water storage. The subcommittee has
also begun an analysis of management
strategies.
The Water Resources subcommittee
has developed baseline water budgets
and has begun to develop scenario-generating
strategies to identify the
effects of various management alterna-tives
on future water supplies.
Finally, the Water Quality subcom-mittee
is conducting a joint ADWR/
ADHS assessment of existing water
quality. In addition, this subcommittee
is examining ADWR's statutory au-thority
under the Groundwater Code to
identify the most effective ways for the
department to integrate water quality
considerations into the developing SMP.
Prelimirary draft documents from
the five technical subcommittees are
anticipated to be completed by the end
of July, 1987. These draft documents
will then be reviewed by the Steering
Committee, the Groundwater Users Ad-visory
Councils (which are five-member
boards created by the Ground-water
Code to make recommendations
on management programs and policies,
and to provide comment and guidance
to the AMA directors in the develop-ment
of the management plans), and
other public advisory bodies. The final
draft of the Second Management Plan
will be completed by October 1, 1987,
and wifi be subject to review in formal
public hearings to be held in each of
the four AMAs during November. The
Second Management Plan will then be
promulgated on January 1, 1988. V
INVITE D
COMMENT
ADWR Chief Outlines
Plans, Progress
Akin R Kleinman, director of the
Arizona Department of Water
Resources, contributed the invited
comment. Dr. Kleinman, who took
over as director in February, is a
resource economist with 25 years
of experience working with water
resource issues in the West.
Growing up on a Mesa, Arizona, dairy
farm I had the opportunity to learn
firsthand the critical role water
supply problems play in economic
survival. As a resource economist for
the past 25 years, I have worked on
water supply issues throughout the
West. Now, as director of the Arizona
Department of Water Resources, I
face the challenging task of helping
to ensure a dependable water supply
for future generations. Luckily, the
department has a very professional,
dedicated staff to assist me in this
task.
Arizona's major water problem is
the imbalance between the water
consumed and the dependable supply.
We currently rely on groundwater for
over 60 pecent of our water supply.
Arizonans annually consume approx
imately 2 million acre-feet more
groundwater than is replenished by
nature.
Arizona's water future will be more
secure if we reduce mining of our
groundwater supplies and reserve
them for times of emergency, such as
a prolonged drought. Many factors
will contribute to our success in elm,
mating groundwater overdraft,
including completion of the Central
Arizona Project, implementation of
the 1980 Groundwater Management
Qode, encouraging groundwater re -
urge, and increasing our water
supplies through effluent use,
weather modification utilizing storm-water
runoff and watershed
management.
The Central Arizona Project will
be a tremendous help in solving our
groundwater overdraft problem. The
estimated long-term CAP water sup-ply
is 1.2 million acre-feet annually-approximately
two- thirds of the cur-rent
rate of overdraft in central
Arizona. The Department of Water
Resources will continue to be a
strong supporter of CAP and Plan 6
features of the project. I'd also like to
expedite use of our full CAP water
allocation. Arizona should be
recharging as much CAP water as
possible while we are waiting for
municipal treatment plants and
agricultural distribution systems
to be completed.
Arizona is fortunate to have the
most comprehensive groundwater law
«the nation. One of the primary
ls of the Groúndwater Code is to
control the severe overdraft of
groundwater currently taking place
in many parts of the state.
The department's staff has done an
excellent job of implementing the
Groundwater Code over the last six
and one -half years. Groundwater
rights have been quantified; the first
management plans have been
adopted; work is well underway on
the second management plans; and
our enforcement program is in full
swing.
January 1, 1987, was the com-pliance
date for the first mandatory
conservation requirements in the
Tucson, Phoenix and Prescott Active
Management Areas. The department
will be able to verify compliance
when the 1987 pumpage reports are
submitted.
During this legislative session
(1987) two bills were introduced in
the Arizona Legislature (S.B. 1452
H. B. 2309) that would signifi-tantly
impact the Groundwater Code.
The department is opposed to most of
the provisions of these bills, and I tes -
tified so at a Joint Legislative
Hearing. The Groundwater Code is
not perfect, and each year the de-partment
supports legislation that
fine-tunes the Code. However, as di-rector
of the Department of Water
Resources, I could never support leg-islation
that severely hampers the
state's ability to achieve safe yield.
While the Code strives to reduce
groundwater use, the department
is also assessing the potential for
increasing Arizona's water supplies.
Watershed management, weather
modification, utilization of storm-water
run-off and effluent use are all
being studied.
During the 1986 legislative session
new groundwater recharge legislation
was passed. Under this legislation the
department is responsible for issuing
permits, site inspection and record
keeping for two types of projects. Re -
charge Projects are designed to
replenish groundwater aquifers, with
no specific withdrawal rights for proj -
ect sponsors. Storage and Recovery
Projects store surplus water for fu-ture
withdrawal by the project
operator.
In addition to these activities the
department will also resume some
long-range planning efforts. At the
request of Governor Mecham we are
working on a 50-year plan which will
project future water supplies and
demands.
As you can see, many efforts are
continuing to ensure that Arizona
has a plentiful water supply for future
generations. y
.:;::
Aztec glyph of dry, sandy riverbed.
LEGISLATIVE
NEWS
The new federal Water Quality Act be-came
law on Feb. 4, 1987, not, however,
before confronting some obstacles. The
99th Congress unanimously passed
clean water legislation, but it was
pocket-vetoed by the president. A new
congress passed the same bill, and it
again met with a presidential veto.
Congress then overrode the veto.
The new legislation amends and re-authorizes
the Clean Water Act of 1972
(PL 92-500) which controls water pol-lution
by establishing limits to
wastewater discharges into lakes and
streams. The 1987 amendments,
however, also set up new initiatives, in-cluding
a program to control pollution
from non-point sources. This means
rainfall runoff from farm and urban
areas, construction, forestry and mm-ing
sites and other diffuse or non-point
sources will now be controled to limit
pollution. Many see this as a needed
new emphasis to the act which pre-viously
focused on pollution from point
sources; i. e., distinct sources such as
industrial or municipal facilities.
Non-point sources of pollution are
emerging as a major concern since pol-lution
from point sources is being
reduced through regulatory actions. As
a result, pollution from non-point
sources now contribute a larger propor-tion
to the natiorìs water quality
problem. Estimates indicate that as
much as 50 percent of the US. polluted
water comes from non-point sources.
Arizona non-point pollution comes
from various sources. Agricultural
runoff includes salts and nutrients
from fertilizers as well as pesticides.
Areas heavily grazed by cattle also
contribute non-point pollution. Mining
and industrial sites are believed to be
sources of non-point pollution. Also,
Arizonas limited surface water attracts
intensive recreational use; the many
boaters, swimmers and other visitors
who visit Oak Creek Canyon, Lake
Powell and the Chain of Lakes along
the Salt River are sources of non-point
pollution.
The 1987 amendments contain the
following provìsions to control non-point
sources of pollution:
Within 18 months each state is re-quired
to submit a program for
managing its non-point-source pollu-tion
to the Environmental Protection
Agency for approval.
EPA will approve or disapprove pro-grams
within 180 days. States whose
programs are disapproved will be noti-fied
of changes needed to gain
approval. EPA will draw up programs
within 30 months fór states that do not
submit plans. Also, local agencies can
draw up their own programs with EPA
assistance.
EPA is authorized to provide grants
of up to 37.5 percent of the total cost to
states to implement approved non-point
source management programs.
EPA is authorized to make similar
grants to states having approved plans
to carry out groundwater quality pro-tection
projects with a federal share of
up to 33.3 percent of the total cost.
Although applauding the emphasis
on non-point sources of pollution, some
critics fault certain aspects of the act.
Some complain that the amendments
do not call for mandatory controls on
non-point sources; instead, states are
directed to conduct planning studies to
look into such controls. Others are dis-appointed
that a statutory program is
not set up that would record early re-sults
to determine later progress.
Arizona is ahead of the federal gov-ernment
and most other states in its
concern with non-point sources of poi-lution.
The state's Environmental
Quality Act, which became effective
last summer, establishes authority for
control of pollution from non- point
sources. ADHS is now working to draw
up EQA regulations. Final regulations
on non-point-source pollution are ex-pected
to satisfy EPA's requirement
that states have a program to control
this threat to water quality. y
RESEARCH
Each issue of Arroyo presents brief de-scriptions
of water research projects
relevant to Arizona. Presented in this
issue are abstracts of some of the pa-pers
presented in the hydrology
section at the 31st annual meeting of
the Arizona-Nevada Academy of Sci-ence
on April 18, at Northern Arizona
University. The complete proceedings
will be published this summer and
will be available from the Arizona
Section, American Water Resources
Association, 845 North Park Avenue,
Tucson, AZ 85719, c/o Dale Wright.
Simulating the
Impacts of Fire:
A Hydrologic Component
Peter F. Ffolliott
William O. Rasmussen
D. Phillip Guertin
University of Arizona
Tucson, AZ 85721
To aid land managers in estimating the
impacts of fire on ponderosa pine forest
ecosystems, a computer simulation
model has been developed to obtain es-timates
of benefits and losses after a
fire on vegetative components, wildlife
components, and hydrologic compo-nents.
Regarding the hydrologic
components, annual streamflow and
changes in water quality, if any, are es-timated
through analyses of time-trend
response functions. For simulation pur-poses,
the time-trend response
functions are translated into an index
of benefits or losses by initially deter-mining
streams of annual ratio values.
The technique also converts the flows
of benefits or losses (that is, the
streams of annual ratios) to annuities,
or equal annual returns from the re-source.
While annuities are normally
thought of in terms of dollars, the con-cept
is equally applicable to non-monetary
flows such as annual stream-flow
and changes in water quality.
N E\iVS
Predicting Solar Radiation
From Cloud Cover
For Snowmelt Modeling
Douglas P. McAda and
Peter E Ffolliott
University of Arizona
Tucson, AZ 85721
Much of the water in Arizona origi-nates
as snowmelt runoff.
Improvement of techniques to predict
the amount and timing of snowmelt
runoff may increase the efficiency by
which this water can be used. To im-prove
the prediction techniques, efforts
have been made to model snowmeit
processes through computer simula-tion.
Most snowmelt models require
measurement of solar radiation, a pri-mary
source of energy for snowmelt.
Unfortunately, direct measurement of
solar radiation is not routinely avail-able.
To estimate solar radiation from
readily available information, equa-tions
have been developed to predict
daily direct and diffuse solar radiation
from knowledge of opaque and trans-parent
cloud cover. Through use of
these equations, a watershed manage.
can apply snowmelt computer simulas
tion models to areas without direct
measurement of solar radiation by
using daily cloud cover information ob-tained
by on-site observations.
Flood Routing
in Broad Ephemeral
Stream Channels
Carl Urikrich
Hebert Osborn
Agricultural Research Service
United States Department of
Agriculture
Tucson, AZ
Flood modeling in broad, sandy chan-nels
is complicated by the presence of
transient, meandering sub channels. A
simple functional relationship between
flow rate and channel cross- section
geometry was incorporated into an ex-isting
computer model (KINERSO).
Both the original and altered versions
were used to route seven flows betwe;
measuring stations (Walnut Gulch, Ar
zona). The bed abstraction component
was adjusted to match simulated and
observed peak flow rates. Simulated
and observed total flow volumes were
compared- The altered model reduced
the error in volume by an average of 35
percent. Perhaps more significant, the
optimal bed abstractions were much
more reasonable.
Analysis of
Natural Ground-Water
Level Variations for
Aquifer Conceptualization
Richard Nevulis
Ross Wolford
Donald R. Davis
Soroosh Sorooshian
University of Arizona
Tucson, AZ 85721
Statistical evaluations of time-series
groundwater data can be used to infer
groundwater flow concepts. Advan-tages
of such passive methods of
analysis may include relative sim-plicity,
low cost, and avoidance of
disturbances typically associated with
stress testing of aquifers. In this anal-ysis,
selected statistical methods were
tised to draw inferences on the charac-teristics
of an aquifer within the
Columbia River basalts in the Pasco
Basin of south-central Washington.
This information will be used in de-veloping
a conceptual model of
groundwater flow and in the planning
of future hydrologic field investigations.
Among the types of conceptual in-formation
derived from statistical
methods are time-series relationships
between the basalt aquifer and the Co-lumbia
River and the probable roles of
structural deformations (primarily
anticlinal folding) for providing impedi-ments
to lateral groundwater
movement. Hydrographs recorded in
observation wells straddling a known
subsurface hydrologic barrier trans-verse
to the Cold Creek Syncline were
correlated to determine the effective-ness
of the barrier in isolating
hydraulic stresses. The conceptualiza-tions
derived from statistical analyses
were, in several cases, able to be corn-bared
with interpretations derived on
the bases of subsequent stress re-sponses.
A Seasonal Analysis
of Colorado River Flows
Through the Grand Canyon,
Arizona, 1914-1984
Charles C Avery
Stanley S. Beus
S. W. Carothers
Northern Arizona University
Flagstaff, AZ 86011
Seasonal and periodic variations in
Colorado River flows through the
Grand Canyon regulate the biological/
riparian communities that have be-come
established in the area.
Fluctuating flows also have a marked
effect on the existing beaches formed
as river terrace deposits in the Grand
Canyon. Both the above features are
considered critical resources to recrea-tionists
in the Grand Canyon. The
timing and magnitude of reservoir re-leases
as well as other aspects of river
regulation are thus important consid-erations
in recreational resource
management and in total systems man-agement
of the Colorado River.
Glen Canyon Dam has controlled
flows through Grand Canyon since
1962; this study presents monthly sta-tistical
data for both pre- and post-dam
periods and demonstrates the re-lation
of the 1983, 1984 high water
releases to the historic record.
Water Quality of the
Upper San Pedro Basin, Arizona
Oralynn T. Self
Arizona State University
Tempe, AZ 85281
Due to rapid population growth,
quality of the limited water resources
of the Upper San Pedro Basin (USPB)
in southeast Arizona has become a ma-jor
concern. Available data shows water
quality is generally good except for sev-eral
localized problems. An area near
St. David is now on the EPA's super-fund
priority list. High nitrate
concentrations make surface and
groundwater unpalatable and poten-tially
harmful to infants younger than
three months old. Coliform concentra-tions
are the most frequently violated
state surface water quality standard in
the USPB. Probable sources include oc-casional
releases of raw sewage from a
wastewater treatment plant in Naco,
Mexico; runoff from grazing land;
leaky septic tanks; and ineffective
sewage treatment plants. Reports indi-cate
continuing occasional minor
releases of acidic, heavy metal polluted
water from the Cananea mine opera-tions
in Mexica Several major mine
water releases occurred during the
1970s that seriously affected water
quality of the San Pedro River killing
all aquatic life along 60 miles of its
length. Other USPB water quality is-sues
include mine waste spills and
leaks, rainwater contamination by
smelter emissions, spills of hazardous
material in transport, and potential
contamination from pesticide applica-tions,
landfills, and underground
storage tanks.
A Risk Analysis Approach to Ground-water
Quality Management in the
Upper Santa Cruz Basin
T Richardson, Donald Davis
University of Arizona
Tucson, AZ 85721
Potential groundwater contaminant
sources in the upper Santa Cruz basin
that pose risks to human health in-dude
copper mines, irrigated
agriculture, and urban wastewater.
Analysis of these risks provides useful
information for comparing groundwa-ter
quality management alternatives.
Alternatives include preventing the in-put
of contaminants at their sources,
preventing migration of contaminants
in groundwater to withdrawal points,
and removal of contaminants at the
points of groundwater withdrawal. The
framework for risk analysis is com-posed
of hazard identification, hazard
evaluation, risk evaluation, and identi-fication
of risk response alternatives.
Potential contaminants identified
range from inorganic ions to complex
organic molecules. Hazards have been
evaluated in terms of fate of potential
contaminants in the environment and
their toxicity. Risks to groundwater
quality and human health in time and
space are described with the use of a
groundwater contaminant transport
model. Because information for the
analysis is incomplete, the evaluation
of risks is not without uncertainties.
Major uncertainties remain in data on
contaminant concentrations and tox-icology
of contaminants.
RESOURCES
AND
IN FORMATION
Arroyo will feature in each issue a re-source
or source of information of
interest to people concerned with wa-ter
issues. The intent is to inform
readers of the varied water-related re-sources
and information sources
available to both professionals involved
with water projects and to the generai
public. This issue features state govern-ment
agencies that are involved with
waterArizona Departments of Water
Resources and Health Services and the
Arizona State Land Department.
Arizona Department of
Water Resources
99 East Virginia
Phoenix, AZ (602) 255-1550
The following water resources data are
available from ADWR:
The Groundwater Site Inventory
(GWtS)QfÍs a computerized data base with
information on over 30ß00 wells and
springs in Arizona. Available infor-mation
includes well location,
construction, depth, ownership, water
devels and-14tater quality mea-sur'mntsFbr
information, contact
ADWR's (602)
255-,
DWR's Operations Division has
computerized information about the
following: 1) all registered wells; 2)
cities, towns and private water com-panies
providing water; 3) irrigation
districts; 4) grandfathered groundwa-ter
rights; 5) Groundwater Withdrawal
Permits issued since 1980; 6) water
usage and rights in Irrigation Non-
Expansion Areas; and 7) surface water
rights. For information, contact
ADWR's Operations Division,
(602) 255-1581.
Written reports are available from
ADWR's Basic Data Section, (602)
255-1543. The "Hydrologic Map Series"
is produced by the Basic Data Section
and is available for a small fee. The
USGS "Water Resource Investigation"
series is available at no charge.
Arizona Department of
Health Services
Division of Environmental
Health Services
2005 North Central
Phoenix, AZ 85004
(602) 257-2306
The Arizona Department of Health
Services' Division of Environmental
Health Services is concerned with the
administration and regulation of state
water quality programs and can
provide the following information: the
regulations and statutes concerning
wastewater, water pollution and haz-ardous
waste; annual reports that
summarize the activities of hazardous
waste, drinking water and water pollu-tion
compliance programs; engineering
reports on. drinking water, wastewater
and septic tank systems; and various
reports from studies on surface and
groundwater quality. ADHS maintains
a bibliography of technical and re-search
reports on environmental topics
which is to be updated quarterly.
Also, ADHS particìpates in the
STORET national water database. The
STORET system contains a com-prehensive
base of water quality data,
in addition to an expanding coverage of
data on soils, water discharge rates,
groundwater and other topics. Data re-trievals
can be made in a variety of
formats. For information regarding de-tails
of data retrieval, call
1-800-424-9067 and ask for STORET
User Assistance.
Arizona State Land Department
1624 West Adams
Phoenix, AZ 85007
(602) 255-4629
The Arizona State Land Department
administers about 9.8 million acres of
state trust lands for the benefit of the
common schools and numerous other
beneficiaries. Since water resources are
a valuable product of state lands, ASLD
collects and processes a considerable
amount of water-related information
derived from water sales, adjudication,
and the documentation of groundwater
use. Sale of water from state lands
through a bidding process necessitates
appraisals based on data regarding wa-ter
quantity, location and use. Also, the
continuing process of adjudication of
surface-water rights in Arizona's major
river basins involves the ongoing collec-tion
of surface-water data. This data is
entered into the ASLD 's natural re-source
database. Call (602) 255-4061 to
inquire about the database. y
PUBLICATIONS
The Magnificent Experiment:
Building the Salt River
Reclamation Project
byKarenL. Smith
This book details an extended case
study of water resources planning and
management in an arid environment. It
examines the cooperative and conflict-ing
relationships between individuals
and institutions that culminated in the
creation of the Salt River Project. The
University of Arizona Press, 1615 East
Speedway, Tucson, AZ 85719. $2a50.
Issues With Risks
by Harald Hiessi and
Marvin Waterstcme
This issue paper is published by the
Arizona Water Information Center. The
publication provides a general but prac-tically-
oriented examination of the
complicated issues which underlie de-cision-
making in risky situations. The
booklet is the first of a series with
other papers to follow addressing more
specific water-related risk situations.
The series is designed for professionals
Nhose work requires an understanding
of risk analysis.
To purchase this publication, write
to: Librarian, Arizona Water Informa-tion
Center, Geology 318, University of
Arizona, Tucson, AZ 85721.
(602) 621-1648. $4.
Govern ment
Publications
Distbuf ion and Movement of Tri-chloroethytene
in Ground Water in
the Tucson Area, Arizona
Water-Resources Investigations
Report 86-4313
This report states that TCE groundwa-ter
contamination in the Tucson
Airport area encompasses about five
square miles of aquifer surface area.
Also, most of the TCE contamination is
in the uppermost 100 feet of the
¿roundwater flow system because a
clay layer restricts the downward
movement of groundwater and TCE.
Copies are available for inspection at
U S. Geological Survey offices and can
be purchased from the US. Geological
Survey, Books and Open-File Reports
Section, Building 810, Federal Center,
Box 25425, Denver, CO 80225. Micro-fiche
$4.75; paper copy $11.00.
Potential for Aquifer Compaction,
Land Subsidence, and Earth Fis-sures
in the Tucson Basin, Azona
Opeñ -Fi le Report 86-482
Aquifer compaction and land subsi-dence
are occurring in the Tucson
basin as a result of groundwater pump-ing.
This report indicates that the
magnitudes of measured compaction
and subsidence are small at present,
but may increase substantially in the
future if groundwater levels continue to
decline.
Copies are available for inspection at
U S. Geological Survey offices and will
be published at a later date as US.
Geological Survey Hydrologic
Investigations Atlas.
Hydrologic Map Series
Report Number 12
This report contains maps showing
groundwäter conditions in the West
Salt River Valley, East Salt River Valley,
Lake Pleasant, Carefree and Fountain
Hills Sub-basins of the Phoenix Active
Management Area.
The report can be obtained for a
small fee from the Arizona Department
of Water Resources, 99 East Virginia,
Phoenix, AZ 85004; or call
(602) 255-1543.
Proceedings
And Lands:
Today and Tomorrow
Described as an international research
and development conference, this
meeting was held in Tucson October
20-25, 1985. The proceedings contain
papers by more than 130 arid lands sci-entists
covering a broad range of topics
on critical arid lands issues, including
desert ecology, irrigation and water
management, small-scale water man-agement
and water policy.
Expected publication date is sum-mer,
1987. The volume can be ordered
from: Publications, Office of Arid
Lands Studies, University of Arizona,
845 North Park Avenue, Tucson, Ari-zona
85719(602) 621-1955. US. price,
$70. (Arizona residents add 5% sales
tax, $ 5ø.)
Water Markets and Transfers:
Azona Issues and Challenges
These proceedings are from a syrn-posium
organized by the Arizona
Section of the American Water Re-sources
Association and cosponsored
by the Arizona Hydrological Society.
The symposium was held in Tucson on
November 7, 1986.
To order this volume and other
AWRA publications, contact: Ms. Dale
Wright, Office of Arid Lands Studies,
College of Agriculture, University of
Arizona, 845 N. Park Ave., Tucson, AZ
85719. (602) 621-1955. $12.
CONFERENCES
AND
SEMINARS 1t1t1
Call For Papers
Regional Conference
on Water Marketing
October 8-9,
University of Denver, CO
Topics include an overview of current
market activities and issues ;practical
perspectives from water managers, ap-praisers,
attorneys and irrigators; a
review of the expanding government
role and the public interest; and assess-ment
of future trends.
For additional ihformation about
submitting papers, contact: Steven J.
Shupe, Watershed West, P.O. Box 8854,
Santa Fe, NM 85704; (505) 983-9637.
Meetings
International Symposium
on Design of
Hydraulic Structures
August 24-2'
Fort Collins, Colorado
The major objective of the symposium
is to collect and motivate creative, the-oretical,
and practical approaches to
the design of hydraulic structures.
For additional information contact:
Department of Civil Engineering,
Room 203, Weber Building, Colorado
State University, Fort Collins, CO 80523
(303) 491-5753.
Agricultural Impacts
on Ground Water
September 29-October 1,
Des Moines, Iowa
The Association of Ground Water Sci-entists
and Engineers has scheduled its
second Agricultural Impacts on Ground
Water Conference to stimulate the ex-change
of ideas regarding agricultural
practices and ground water quality.
For additional information contact:
Agricultural Impacts Conference, Na-tional
Water Well Association, P. 0. Box
182039, Department O17, Columbus, OH
43218 (614) 761-1711.
Geological Society
of America's
Annual Meeting & Exposition
October 26-29,
Phoenix, AZ
For information about the meeting, call
(303) 447-2020. Preregistration is due
September 25.
American Water
Resources Association
Conference and Symposium
October 31-November 6,
Salt Lake City, Utah
The theme of AWRA's twenty-third an-nual
conference is Averting Water
Crises. WaterResourcesRelated to
ARROYO
UNIVERSITY OF ARIZONA
Water Resources Research Center
Arizona Water Information Center
Tucson, Arizona 85721
WRRC
Water Resources Research Center
Mining and EnergyPreparing for
the Future will be the topic of discus-sion
at the symposium.
For information about the con-ference
contact : A. Bruce Bishop,
Dean, College of Engineering, Utah
State University, Logan, UT 84322-4100
Arroyo, a quarterly publication,
is published cooperatively by:
Arizona Department of Health Services
Division of Environmental Health
Services
2005 North Central
Phoenix, AZ 85004
(602) 257-2306
Arizona Department of Water
Resources
99 East Virginia
Phoenix, AZ 85004
(602) 255-1554
Arizona State Land Department
1624 West Adams
Phoenix, AZ 85007
(602) 255-4629
(801) 750-2775.
For information about the sym-posium
contact: Richard Dworsky
Chief of Planning & Evaluation, U S.
Bureau of Land Management, 701 "C"
Street, Box 13, Anchorage, AK 99513
(907) 271-3349.
Offlee of Arid Lands Studies
College of Agriculture
University of Arizona
845 North Park
Tucson, AZ 85719
(602) 621-1955
Water Resources Research Center
College ofEngineerin.g and Mines
University of Arizona
Tucson, AZ 85721
(602)621-7607
Address news items or comments to:
Joe Gelt, Editor
Arroyo
Arizona Water Resources Center
Geology Building, Room 314
University of Arizona
Tucson, AZ
(602) 621-7607
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