The paper considers the significance of one of the largest collections of earlier prehistoric artefacts associated with a Scottish dune system. It came from a narrow spit, formerly an offshore island, at the mouth of Loch Fleet and was dominated by large numbers of arrowheads dating from the Early Neolithic period and the Beaker phase. They seem to have been made there, and many were unfinished. The original findspots are inaccessible today, but a programme of field walking in the surrounding area confirmed their exceptional character. Perhaps this remote location was chosen as a production site because of the specialised roles played by the artefacts made there. The results of this project are compared with similar evidence from the Culbin and Luce Sands.

Low-flow characteristics of selected streams in West Virginia were determined at continuous-and partial-record sites. Daily discharges at 100 continuous-record gaging stations on unregulated streams were used to compute selected low-flow frequency values. Estimates of low-flow frequency values at 296 partial-record sites (ones having only discharge measurements) were made using the relation defined by concurrent flows with a continuous-record station.Low-flow characteristics at continuous-record stations were related to drainage area and a variability index to produce equations which can be used to estimate low-flow characteristics at ungaged sites in West Virginia. The State was divided into two hydrologic regions. Drainage area and a streamflow-variability index were determined to be the most significant. The streamflowvariability index was computed from duration curves and was used to account for the integrated effects of geology and other hydrologic characteristics. The standard error of estimate for the 7-day low flow with a 2-year recurrence interval is 43 percent for Region 1 and 57 percent for Region 2. The standard error of estimate for the 7-day low flow with a 10-year recurrence interval is 82 percent for Region 1 and 83 percent for Region 2.

Traveltime studies, using rhodamine dyes, were made in 1970 and 1982 on the South Branch Potomac River from Petersburg, West Virginia, to the confluence with the North Branch Potomac River at Green Spring, West Virginia. Flow-duration at the time of the studies was approximately 32 percent in November 1970 and 95 percent in September 1982. Two studies, at discharges of 110 and 1,230 cubic feet per second, were used to define traveltime-distance relationships. A contaminant takes 386 hours to travel 69 miles from Petersburg, West Virginia, to the mouth of the river when streamflow is 110 cubic feet per second. The contaminant would, however, take only 89 hours when streamflow is 1,230 cubic feet per second. The traveltime data were interpolated and extrapolated for selected discharges from 70 to 1,500 cubic feet per second at the index gage near Springfield, West Virginia.

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