OAR 690-076-0025
Information Base
(1)
The Department and Commission shall consider the following information to the extent available, when evaluating applications:(a)
Items of information listed in OAR 690-076-0018 (Application Standards for Minimum Perennial Streamflows)(2) through (5);(b)
Water permits and rights of record and information pertaining to actual use of water;(c)
Existing instream uses;(d)
Stream gage records or estimates of flow;(e)
Existing water supply and water quality problems;(f)
Water needs for existing and planned beneficial uses and seasonal characteristics of water demands;(g)
Sources of water supply in the subbasin considering: groundwater, surface water, planned actions or potential for developing storage sites, conserving water, enhancing riparian zones and enhancing watershed yield;(h)
Basin water use programs;(i)
Statutory and administrative restrictions on water use;(j)
Acknowledged comprehensive land use plans;(k)
Benefits and values from existing and planned uses of surface water in the subbasin;(l)
Benefits and values of potential water uses.(2)
The Department and Commission may make reasonable assumptions or estimates for information when specific data are not readily available. Any assumptions or estimates used shall be stated for public review and may include but shall not be limited to:(a)
Monthly and annual runoff characteristics;(b)
Major sources of inflow to the stream;(c)
Characteristics of existing water use including frequency of use, evaporation and transpiration, opportunity for conservation and effects of use on streamflows;(d)
Potential sources of water supply;(e)
Amounts of water needed to supply potential beneficial water uses;(f)
Impact of land use and development on streamflow.(3)
The Commission will determine the adequacy of water supply at a minimum flow location for satisfying existing, planned and potential instream and out-of-stream uses. The Commission will consider the existing streamflow pattern. If there are shortages, the Commission will consider the plans and potential for developing supplies for both instream and out-of-stream needs. The Commission will only consider ground water a separate source if use is not likely to affect streamflow levels and is not in a critical groundwater area. Interbasin transfers may be considered as an additional water supply only if a project has been planned or constructed. The Commission will consider whether planned or potential out-of-stream use could reasonably be served by sources other than natural flow during periods of shortage. If the uses require natural flow, the Commission will evaluate the importance of the planned uses and both the importance and likelihood of potential uses.
Source:
Rule 690-076-0025 — Information Base, https://secure.sos.state.or.us/oard/view.action?ruleNumber=690-076-0025.