Laserfiche WebLink
ACCURACY LEVELS WITHIN <br />GCES GIS DATA BASE <br /> <br /> <br /> <br />r <br />W <br />Entire Colorado River Corridor <br />1 : 24,000 USGS quad sheets <br />Accuracy = 3- B meters Vertical <br />50 meters horizontal <br />Methodology to obtaim <br />Photo referenced data mapped <br />to 1 : 24,000 orthophot0 map. <br /> <br />Individual Monitoring Study Site #4 <br />Scale = 1 : 2,400 <br />Accuracy = 0,15 meters Vertical <br />2 meters horizontal <br />Methodology to Obtain: <br />Photo Referenced data mapped to <br />1 : 2,400 OrthoPhOto map. <br /> <br />Large Scale Study Site -?-' <br />Scale = variable <br />A X racy , 1 Sirvey control accuracy = up to subcMrtimeter <br />2. Features and/or local site topography accuracy = 10 centimeters <br />Methodology to Obtain <br />Ground Based Survey <br />Figure 8. - The three levels of accuracy within the GCES/GIS data base.