BOARD02064

• Board Meeting Date: 3/21/2002
• Description: OWC Section - Drought and Water Supply Assessment
• Board Meetings - Doc Type: Memo

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Section 4
Project Approach (RFP Section 4.6)

of the data once it is received from the respondent. Information obtained through other
channels (i.e., fax, mailings, face-to-face meetings, etc.) is captured in hardcopy format and are
then entered into the data base through the same set of computer screens used to input the
telephone responses. I

Phase IV - Data Evaluation and Reporting

Quality reporting involves three basic parameters: 1) Accurate and meaningful content; 2)
Professional appearing presentation; 3) Ease of use and readability. After the survey data is
synthesized across all methodologies, the information will be analyzed in a myriad of ways~
Traditional statistical methods of analysis will illuminate patterns among the data. The data
will also be compared to historical sets of data, including the water year 1977. The historical
data should lend a great deal of perspective to the current information. 'Data will be mapped or
plotted, showing regional differences and similarities.

The responses received from the survey instrumen~ will be evaluated to identify:

o Where supplies were not adequate to meet demands

o Locations of storage facilities and the quantities of carry-over storage

o Limitations on water use, including the identification of competing water uses,
rights and needs

o Need for additional storage needs and! or transfer capabilities'

These determinations will be developed using the response data and one-way and two-way
analysis of variation (ANOV A) coupled with the Tukey follow-up procedure, or similar, to
compare population statistics for purposes of identifying differences in responses, ultimately
determining the overall availability of storage, the amount of carry-over storage and the relative
concern for additional storage capacity. '

We will test for the likelihood that no carry-over storage concerns existed, as well as for the
likelihood that widespread carry-over storage shortages occurred. By comparing the likelihood
that wide spread carry-over storage shortages occurred with the backdrop of historical
droughts and trends in Colorado, we will be able to put the 2000 water year into perspective
regarding its severity and the State's preparednesS:

Information collected from the survey will be used' to identify opportunities for reallocation of
potential excess carryover storage to areas with little or no drought protection given that the
survey instrument will include questions relating to the respondent's carryover storage,
including: '
0' Total system storage capacity

o Target storage volume at end of water year '

o 'Historic storage volumes at beginning and end of significant drought periods (e.g.,
water years 1977 and 2000).

Section 4, Page 21