PROJ01918 ‎(2)‎

• Contract/PO #: FS0077FX
• Contract Type: Grant
• Water District: 0
• Loan Projects - Doc Type: Feasibility Study

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· Jessie Ditch
. Highline Ditch (35%)
. Ellington (15%)
. Allen Mesa

The following ditches are either out ofthe system or do not exist:

· Oasis No. 1
· Newman Ditch
· Orchard D.
. Hollenback lIT. D. No.3
. Groome Waste D. No.2
. Hamill waste water diversion
. Hansen Spring Pipeline
. White waste system
. Irving D. No.2
· Bailey D
. Barnie Branch D.
. Cement w/w D. No. 1& No.2
· Church D.
· Dog fish D.

3. Water rights and water exchange (system operation):

The Leroux Creek System is operated with an agreement among water users that is
based on exchange percentages during high and low flows. During the spring runoff
the system's exchange is used to store water in 28 reservoirs and distribute water to
all users in accordance to their decree less what have given to the exchange total and
their share of the exchange total. During low flows the percentage changes and the
users receive a portion of stream flow and a portion of reservoir water. Once the
reservoir water is used then the users only receive what the decree provides in order
of priority. The high flow percentage values are used when flow exceeds 62 cEo; in
Leroux Creek. The low flow percentage values are used when flow is less than 62
cfs.

4. Miscellaneous:
a. Runoff for Leroux Creek is highest during May while runoff in Surface
Creek is mostly during both May and June. This is most likely due to the
basin characteristics of Leroux Creek. As the slopes are facing south the
melting of snow is faster in Leroux Creek Basin and thus most runoff
occurs in May. In Surface Creek, the melting is slower and runoff will be
through May and June.
b. On an average monthly basis, the total amount of available water in the
Leroux Creek is lower than the total decreed water amounts.

P:\DOMESTIC\1463-Leroux Creek\M. Meetings\Phone Conference Call.doc 3