What projection are the latitude and longitude values in?
The latitude and longitude coordinates were gathered thru various methods, many of the methods for particular stations are unknown to us. As you may know, our hydrologic database is fed from various agency sources. Geospatial precision, including horizontal datum and projection, was not part of the original scope nor intent for this database. However, for sites maintained by the Department of Water Resources this is what one of the technicians has to say: The basic coordinates are arrived at by pinpointing the location on a 15-minute USGS quad and then calculating the Lat/Longs. This means the coordinates are NAD-27. In recent years we have been gathering coordinates using handheld GPS with the added antenna to give us +/- 20 feet accuracy and we use the WGS-84 datum. We also have been using UTMs and then converting the UTMs using the Jeep website converter. I’m sure the converted GPS coordinates are good for your needs, but the problem is I can’t tell you precisely which sites have be
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