Preliminary assessment of the potential for shoreline erosion around Cromwell

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Thomson, R. 1980 Preliminary assessment of the potential for shoreline erosion around Cromwell. Lower Hutt: New Zealand Geological Survey. New Zealand Geological Survey report EG 340. 33 p.

 Abstract: Significant erosion will occur locally around Cromwell at the 195 m level during both the filling and initial operating phases of the Lake Dunstan hydro reservoir should the alluvial slopes remain unprotected. Wave action will be most severe on the shoreline segment north of the township. Erosion can be reduced or eliminated in sensitive areas by armouring both the steeper alluvial slopes below 195 m and the beach zones, but the cost of such measures must be weighed against the value of potentially erodable land and man-made structures. The position of the most desirable shoreline should be determined by the interested parties before protective measures are implemented.