Geology topics
Clair B. Stalnaker
Publications and source records attributed to Clair B. Stalnaker.
Evolution and application of instream flow methodologies to small hydropower developments: an overview of the issues
ethods for evaluating instream flow needs have evolved over the last 30 years resulting in two categories which are defined as “standard-setting” and “incremental”. Standard-setting methodologies refer to those measurement and interpretative techniques designed to generate a flow value(s) which is intended to maintain the fishery at some acceptable level. Incremental methodologies on the other hand are organized and repeatable processes by which: (1) a fishery habitat/streamflow relationship and the hydrology of the stream are transformed into a baseline habitat time series; (2) proposed water management alternatives are quantified and compared with the baseline; and (3) project operating rules are negotiated. A hierarchical approach to small-hydro instream flow analysis is suggested.
Instream flow assessments come of age in the decade of the 1970's
No abstract available.
The use of habitat structure preferenda for establishing flow regimes necessary for maintenance of fish habitat
The pursuit of simplicity in the complex management of instream and out-of-stream water uses very early led to the minimum , or “base,” flow concept and the myth that a consistent methodology could be used to establish the desired minimum flow. Such a single flow value has not proven to be practical. As water becomes fully appropriated to upstream use and storage, the minimum flow, if not violated, tends to become the average condition. This situation is manifest in a flat or stepped but fixed hydrograph throughout the stream reach of concern for much of the year.
The IFG incremental methodology for physical instream habitat evaluation
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