Abstract
Hand-held, small-format (35-mm) aerial photography can provide reliable measurements for geographic information system (GIS) data collection. This article presents a waste-site investigation in which a digital monoplotter was used to capture measurements from enlarged 35-mm oblique photography. Smallformat overlapping photography was used to create a digital elevation model, which supplied elevation data for digital monoplotting. Point locations for installing monitoring instruments were plotted on a single 35-mm photograph (1:5,187 scale) and subsequently were located in the field with 43-cm accuracy. Results suggest the low-cost method is suited for waste-site investigations and GIS data capture.
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