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Research Looks at Effects of Yuma Desalting Operations
Research to monitor water quality in the Cienega de Santa Clara, located
in the Colorado Delta in Mexico, has both environmental and political
significance. The research is to evaluate how the operation of the Yuma
Desalting Plant will likely affect the cienega. What will be the environmental
consequences to this wetland that provides habitat to at least 95 different
species of resident and migratory birds including the endangered Yuma
Clapper Rail?
Its political significance is that the research is being conduced after
various groups involved in a controversy about the YDS operations were
able to work out their differences to identify a set of management alternatives
agreeable to all. It was considered an extraordinary collaborative effort.
The principal concern was that operating the plant would result in the
Cienega getting less water, with the water much saltier, causing harm
to plants and animals. Many, however, believed that the plant’s
operation was needed to help cope with ongoing drought conditions.
Researchers will begin collecting baseline data in August. Plans call
for the YDP to conduct at 3-month trial run at 10 percent of its full
capacity during the spring 2007, with scientists gathering water quality
data during and after the trial run.
Water sampling will be conducted every month for the next year from 17
locations within the cienega. The water will be tested for salinity, dissolved
oxygen, nutrients, selenium concentration and other characteristics to
determine if the trial run of the YDP has affected water quality and to
what extent.
“Monitoring during the next year will provide long-needed baseline
information and increase our understanding of how hydrologic variation
affects environmental quality in this critical wetland,” said Flessa,
the project’s principal investigator and University of Arizona geoscience
professor.
The report issued by the working group called for water quality monitoring
of the cienega. The Central Arizona Project has contributed $80,000 to
the effort.
Neither BuRec nor Bureau but Reclamation
By referring to the agency as “Reclamation,” rather than “BuRec”
or the “Bureau,” Bureau of Reclamation officials are hoping
that whatever inconveniences are caused by the extra syllables will be
more than made up for by the new name more clearly stating the agency’s
mission.
What a “BuRec” is could be anybody’s guess. Confusion
results if the agency is called the “Bureau,” especially in
the West where the Bureau of Land Management is active. Mention “Bureau”
and people wonder, “dirt or water?”
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| The above picture taken July 31 shows the record-breaking flow in
the usually dry Rillito River. Many Tucsonans find it a goading sight
to see an abundance of free-flowing water heading downriver, out of
reach. An idea that often surfaces with rising waters is the construction
of an inflatable dam to capture water for local use. This flood was
no exception, with the idea again making the rounds that a dam be
built, or rather inflated, near the confluence of the Rillito and
the Santa Cruz River. Tempe’s Town Lake is cited as an example.
In an editorial the Arizona Daily Star rhapsodized about the possibilities:
“With some visionary thinking, we might someday look from the
bridges near Downtown and see people in non-motorized boats and in
restaurants along the banks of an attractive waterway.” Photo:
Arturo Baez |
As a result, officials of the water and power agency are requesting that
their employees, stakeholders and the press refer to the operation simply
as “Reclamation.”
The few extra syllables of “Reclamation” are nothing compared
to the nomenclature adjustment the agency attempted in 1979 when its name
was changed to Water and Power Resources Service.
The recent name change is part of a two-year visual identity program that
is attempting to ensure consistency throughout the agency. The program
includes new letterhead, a refined logo and a new tagline: “Managing
Water in the West.”
The U.S Geological Survey and the Park Service had undertaken similar
efforts in recent years.
Earth Fissure Info to be More Available
Recent legislation will enable prospective homebuyers to check on a concern
they oft overlook: earth fissures. Fissures are caused by excessive groundwater
pumping in an area.
The bill addresses two of the main reasons fissures are overlooked: homebuyers,
many of whom are from out of state, don’t think of them, and information
about fissures has not been readily available. A person may become aware
of fissures only after having purchased real estate.
The bill will raise homebuyers’ awareness about fissures and make
information about them more generally available.
The law requires that the Arizona Department of Real Estate post online
maps of earth fissures, or subsidence cracks, with the maps updated every
five years. This may be done as early as January.
The law organizes a team effort, with the State Land Department, the Arizona
Geological Survey and the Arizona Department of Real Estate coordinating
the required data collecting. The AGS will receive funding for geologists
to do field work and map the cracks. Estimates for compiling a set of
maps is about four years; priority areas for mapping will be areas slated
for development.
A recurring problem in the state, earth fissures have been attracting
increased attention as development moves into previously agricultural
areas.
Development and real estate interests supported the bill.
EPA Proposes Water Transfer
Rule
Two recent Arizona Republic opinion pieces addressed the topic
of water, each offering a suggestion the writer believed would improve
water management in the state. The pieces are summarized below.
International Consortium Would Provide New
Arizona Water Supplies
In an August 19 piece Karl Kohloff argued that establishing an international
consortium could help Arizona to its “next bucket of water.”
He envisions such a consortium as being made up of Mexico, California,
Nevada and Arizona, with the U.S. Bureau of Reclamation also participating.
The consortium would play a pivotal role in constructing a large
desalting plant along the Gulf of California and a companion power
generator plant in Mexico. He envisions the operation providing
possibly more than 3 million acre-feet of water, to be pumped into
the lower Colorado River Basin.
The desalted water then could be exchanged with agricultural districts
so that water they presently use would remain in Lake Mead to augment
California, Nevada and Arizona water supplies.
Significant expense would be involved to desalinate and pump the
water. To cover the cost Kohloff advocates establishing a new Arizona
Water Authority with taxing and bonding powers. He views it as similar
to the Arizona Power Authority, emphasizing that it would have to
be transparent. Appropriate governance and costs would be equitably
shared by those benefitting from the taxing and bonding.
He envisions Arizona’s transmission system as a second CAP,
financed by the state with projects for both northern and southern
Arizona.
Ecosystem Fee Would Help Restore Rivers
Karl Flessa, a University of Arizona geoscience professor, is concerned
about the condition of the state’s rivers and riparian areas.
Groundwater pumping and diversions have greatly reduced the flows
of many Arizona rivers, with attendant recreational, economic and
environmental costs. Flessa offers a plan to help restore flows
to the rivers.
In an August 21 piece he suggests that an ecosystem fee of $1 be
charged for every 100,000 gallons of water used. He figures this
would not be a particularly onerous fee, coming only to about $1.34
for the average Phoenix household.
Flessa figures if every household and farm in the Southwest using
Colorado River water paid the ecosystem fee it would come to about
$45 million per year. This amount would be further increased by
fees paid for use of other surface water and groundwater.
The monies could be put to various uses. A prime use would to help
restore and protect the ecosystem services depending on water. Also
it could be used to improve irrigation practices, with water that
is saved used for restoration. Ecosystem funds could support research
on ways to use reclaimed water to restore riparian habitats. It
could also pay farmers to fallow fields for a year, with their water
then used to support natural or restored habitats.
He believes a regional and international approach is justified since
natural ecosystems aren’t confined by political boundaries. |

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