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STATE OF COLORADO ERNEST L. MIKITA, CHAIRMAN, Calhan; ANNE J. CASTLE, VICE-CHAIRMAN, Denver; JON B. BROWNELL, Hooper; EUGENE A. BAUERLE, Julesburg; DENNIS W. CORYELL, Burlington;
ROBERT R. LOOSE, Wiggins; LARRY CLEAVER, Grand Junction; RICHARD F. HUWA, Keenesburg; CHARLES MAX SMITH, Walsh




STATE OF
COLORADO
GROUND WATER COMMISSION

Division of Water Resources
Department of Natural Resources

1313 Sherman Street, Room 818
Denver, Colorado 80203
Phone (303) 866-3581

FAX (303) 866-3589













Bill Owens













Governor














Greg E. Walcher













Executive Director, DNR














Hal D. Simpson, P.E.













Executive Director
April 8, 1998

POLICY MEMORANDUM 95-3

APPROVED BY THE COMMISSION ON FEBRUARY 24, 1995
AMENDED BY THE COMMISSION ON FEBRUARY 13, 1998

POLICY OF THE COLORADO GROUND WATER COMMISSION PURSUANT TO RULE 8,
OF THE RULE AND REGULATIONS FOR THE MANAGEMENT AND CONTROL OF
DESIGNATED GROUND WATER, CONCERNING THE USE OF FLOW METERS OR
POWER METERS (AS AN ALTERNATE METHOD OR DEVICE FOR WATER
MEASUREMENT)


1. SCOPE

This policy is applicable to all high capacity wells located in Designated Ground Water
Basins that have permits with conditions requiring measurement of withdrawals of water.

2. DEFINITIONS

2.1 The following definitions are applicable to this policy governing the measurement of
high capacity wells in Designated Ground Water Basins:

2.1.1 "Compound system" means a system where the power meter records
electrical usage from any electrical device other than the pumping systems from
a single well and its attached sprinklers.

2.1.2 Complex system means any system where the total dynamic head at the
pump will vary due to multiple discharge locations in a pipeline, or where the
method of delivery will vary between open discharge, gated pipe, or sprinkler
system during a single irrigation season, or where multiple wells discharge in to a
common pipeline.


2.1.3 "District" means a Ground Water Management District organized under
Article 37-90 of the Colorado Revised Statutes.
POLICY MEMORANDUM 95-3, AMENDED
April 8, 1998
PAGE 2


2.1.4 "High capacity well(s)" are those wells issued pursuant to 37-90-107,
C.R.S., that produce designated ground water as defined in section 37-90-103(6),
C.R.S.

2.1.5 "Inactive well" means any well that is not in use and is disconnected from a
power source.

2.1.6 "Power coefficient" means the amount of electrical energy expressed as
kilo-watt hours (KWH) consumed in pumping one acre-foot of water.

2.1.7 "Field certified" means to verify that a flow meter is in accurate working
condition under field conditions when installed or to verify that testing procedures
approved by the Commission are properly adhered to when determining a power
coefficient. These procedures are to be conducted under the supervision of an
individual or entity annually approved for field certification by the Colorado Division
of Water Resources.

2.2 Any other term used in this policy that is defined in Article 37-90 or 37-92 is used with
the meaning given therein.

3. GENERAL REQUIREMENTS

3.1 All wells within the scope of this policy shall either be equipped with a totalizing flow
meter that is installed and maintained according to manufacturer's specifications and
recommendations or be tested to determine a power coefficient.

3.2 The Commission may adopt standards and specifications for the installation,
calibration, testing, repair and maintenance of flow meters, or for well testing procedures
to determine power coefficients.

3.3 If the well is part of a compound system, or if the pump is driven by an internal
combustion engine, the owner or user of the well must utilize the totalizing flow meter
method and the provisions of section (4) of this policy.

3.4 If the well is part of a complex system the owner or user of the well must utilize the
totalizing flow meter method and the provisions of section (4) of this policy shall apply;
except that the power coefficient method may be utilized after obtaining Commission
approval and subject to the following:

(a) That power coefficients are field certified for the well under every method of
delivery and for every irrigation system configuration for which the well will be
operated, or as required by the Commission.

(b) The Commission shall use the lowest power coefficient to calculate annual
withdrawal from the well.

(c) Calculated water withdrawals obtained by using the lowest power coefficient
method are not acceptable for any type of future historic use determination.

3.5 All flow measuring equipment or devices utilized in field certification must have an
accuracy within plus or minus 2 percent.
POLICY MEMORANDUM 95-3, AMENDED
April 8, 1998
PAGE 3


3.6 No water shall be withdrawn from any well not in compliance with this policy except
to determine a power coefficient or to field certify a totalizing flow meter.
4. USING A TOTALIZING FLOW METER

4.1 Any owner of a well within the scope of this policy who installs a totalizing flow meter
after the effective date of this policy shall provide written documentation, to the
Commission and the district on a form prescribed by the Commission, verifying the
proper meter installation and field certification. This documentation shall be received by
the Commission and the district prior to any use of the well.

4.2 The owner of any well with a flow meter that is required pursuant to Rule 8 of the
Designated Basin Rules may be required to submit the form specified in section (4.1) of
this policy at the request of the Commission.

4.3 A totalizing flow meter shall be considered acceptable for the purpose of this policy if
it meets the following specifications:

4.3.1 The totalizing flow meter is capable of having an operating accuracy of
plus or minus 5 percent under the manufacturers recommendations.

4.3.2 The totalizing flow meter shall be constructed from a material acceptable
to the Commission of suitable strength and rigidity to maintain its shape and
integrity under all normal field conditions. Where metals subject to rust or
corrosion (cast iron, steel, or aluminum) are used, the entire surface of the body
of the meter shall be protected with an impervious coating applied by the
manufacturer.

4.3.3 Totalizing flow meters shall be equipped with a direct reading odometer
type totalizing register and rate of flow indicator sealed in a water tight (weather
proof) case equipped with a viewing glass. The totalizing register shall provide
direct readings in acre-feet or gallons, and have sufficient recording digits to
assure that "roll over" to zero does not occur within three years. The rate of flow
indicator shall be either a direct display of rate of flow in gallons per minute, or a
center sweep hand indicating gallons or acre-feet per revolution.

4.3.4 The totalizing register and rate flow indicator may be required by the
Commission, to be sealed with a device or procedure acceptable to Commission
(e.g. a wire and lead seal) to prevent tampering or unauthorized removal.

4.4 When a totalizing flow meter is used, it shall be the owner's responsibility to keep the
meter in acceptable operating condition as to provide a cumulative, accurate record of
withdrawals.


4.5 The Commission and the District shall be notified in writing of the date and person
performing the field certification of a flow meter 3 days in advance of this procedure.

4.5.1 Totalizing flow meters installed within the scope of this policy on or after the
effective date of this policy shall be field certified when installed.
4.5.2 Totalizing flow meters installed on said wells as of the effective date of this
policy shall be field certified prior to any use of the well in the calendar year
following the effective date of this policy, and be field certified every four years
thereafter; except that any meter installed and field certified on or after February POLICY MEMORANDUM 95-3, AMENDED
April 8, 1998
PAGE 4


24, 1995 and prior to the effective date of this policy shall be field certified every
four years thereafter from the date of the last field certification.

4.5.3 Totalizing flow meters installed on wells that are required to be administered
pursuant to Rule 7 of the Designated Basin Rules are required to be field certified
every four years after the date of original insta