2005-11-28_HYDROLOGY - M1983067

• Permit No: M1983067
• IBM Index Class Name: Hydrology
• Doc Date: 11/28/2005
• Doc Name: Combined Replacement Plan
• From: OSE
• To: DMG
• Media Type: D
• Archive: No

5. The flow into EVERY recharge structure MUST be metered and equipped with a
continuous flow recorder unless the water commissioner in conjunction with the
division engineer determines adequate records may be kept without such
equipment. If the recharge structure is designed to discharge water via a surtace
outlet, such discharge must also be metered and equipped with a continuous
flow recorder. Unless provided an exemption from either the water commissioner
or division engineer for this requirement, the water commissioner MUST approve
the meter, recorder and installation and the installation must be completed
BEFORE the Division of Water Resources will acknowledge any recharge credit
to the structure.
6. All recharge ponds must have a staff gauge installed such that the gauge
registers the lowest water level in the pond. The staff gauge must be readable
from a readily accessible location adjacent to the pond.
7. All recharge areas must be maintained in such a way as to minimize
consumptive use of the water by vegetation. No recharge area may t1e used
for the planting of crops duNng the same iMgation year that ft is used as a
recharge site without pNor approval from the Water Commfssioner or
Division Engineer.
8. The amount of water recharged to the alluvial aquifer is to be determined by
measuring the amount of water delivered to the recharge structure and
subtracting:
a. the amount of water discharged from the recharge structure,
b, the amount of water lost to evaporation (see item 9, below),
c, the amount of water lost to consumptive use due to vegetation located
within the recharge structure, and
d. the amount of water retained in the recharge structure that has not yet
percolated into the ground.
9. Net evaporative losses from the recharge structure must be subtracted from the
volume of water delivered to the pond. Evaporative losses must be taken every
day the pond has a visible water level. If the pond does not have astage-surtace
area curve approved by the water commissioner, the maximum surface area of
the pond must be used to determine the evaporative losses. Monthly loss factors
prorated for the number of days the pond had a visible water level may be used
as may real time evaporation data from NOAH or a local weather station. If the
pond is not inspected on a routine basis through the month, no prorating of
monthly factors will be allowed.
10. The amount of accretions to the target stream will be determined using the
amount of water recharged to the alluvial aquffer (as described in item 8, above)
and lagging the recharge using the Glover equation, USGS SDF contour maps or
other methodology approved in advance by the Division of Water Resources.
11. Accounting~must t~ performed on a daily basis with reports submitted monthly
within 30 days of the end of the month for which the accounting is being made.
Recharge Protocol, Revised,daauary-28-2995 January 28. 2005