DRAFT: This module has unpublished changes.

USGS Activity:

For this activity we used physical maps from United States Geological Survey and National Oceanic & Atmospheric Administration to learn how to find data on different types of maps.

 

For the first one we looked at Point Reyes National Seashore & Vicinty in California, last updated 1973. The quadrangle was 7.5 minutes ad it was adjacent to maps of Petaluma & Mt. Tamalpais. The scale was 1: 48000 feet with contour intervals of 80 feet. The datum – starting reference point is the depths, curves, & soundings in feet from mean high water line. There were no UTM, Universal Transverse Mercator, coordinates but the latitude & longitude: 123*02’N 38*15’ E.

 

 

For the second one we looked at National Oceanic & Atmospheric Administration's map of New York Harbor created 1874 and last updated 1941. The datum would be soundings in feet at mean low water and it featured waterways, rivers , bridges, radio towers, navigational lights, and the tallest buildings. All of these would be useful for ships sailing by that may need resources or contact. The map numbers, not names, that were adjacent are 12321 & 12329. The scale was 1:40,000 feet. It was located at 40* 35’E 70*15’ N.

DRAFT: This module has unpublished changes.