133 Higher Approximation to Nonlinear Water Waves and the Limiting 
Heights of Cnoidal, Solitary, and Stokes‘ Waves, February 1963. 
134 Beach Profile as Affected by Vertical Walls, June 1963. 
S}5 The Relationship Between Watershed Geology and Beach Radio- 
activity, August 1963. 
Material covered by Technical Memoranda listed above, excepting num- 
bers 132 and 135, is briefly described in foregoing paragraphs II and IV 
of Research Progress, or in the section of Research Progress in Volume 16, 
July 1962, of the Annual Bulletin of the Beach Erosion Board, The work 
covered in Technical Memorandum No. 132 was carried out by several U. S. 
Army Corps of Engineers' installations, including the Beach Erosion Board, 
under the CWI program related to design, construction, and operation of 
flood control, navigation, and multiple purpose projects involving major 
reservoirs, levees and channel improvements. An abstract of its contents 
follows: 
The report summarizes wave observations in Fort Peck Reservoir and 
Lake Texoma, the latter formed by Denison Dam. It briefly reviews 
certain investigational programs and publications pertinent to wave 
study in inland reservoirs, and summarizes analytical studies made 
to adapt, modify or supplement procedures currently used in estimat- 
ing wave characteristics corresponding to wind and related factors 
to conform with observations in the two reservoirs. It presents 
procedures for quantitatively determining wave characteristics, 
and briefly outlines additional investigations needed to further 
improve methods and criteria. Certain general guidance and ap- 
proximate formulas are presented for interim use in estimating 
wind tide effects in deep reservoirs. 
The work described in Technical Memorandum No. 135 was done at the 
University of California, supported by an Atomic Energy Commission grant, 
but because of a close relationship to the Beach Erosion Board's research 
program it was published in the Technical Memoranda series. An abstract 
of the contents follows: 
Correlation between watershed geology of the Ben Lomond Mountain 
area, north of Santa Cruz, California, and radioactivity of beaches 
receiving sediment from the watershed is attempted. Radioactivity 
of stream and littoral sediments are presented in terms of thorium 
concentration determined by gamma-ray spectroscopy. Results are 
inconclusive regarding watershed geology - beach radioactivity 
relationship. Radiometric determination for littoral samples are 
remarkably constant with low activity indicated, but considerable 
variation in thorium content of stream sediment is found which is 
not consistent with any known geological variation. It is concluded 
that studies of geological maps and petrographic descriptions are 
not sufficient to determine applicability of the radioactive tracer 
technique. 
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