Waypoints are named coordinates representing points on the surface of the Earth.
     Folks need to remember that coordinates and waypoints are Datum 1 2 3 4 dependent!

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Where am I?
Iowa Geographic Map Server

Geodetic Coordinates From Maps
    Topo Maps
    Wikimapia (coordinates in url)
    USGS National Map Viewer
    Graphical Locater (map)
    Latitude/Longitude Position Finder

Finding Coordinates from Maps and Orthoquads
    MSR Maps
    USGS National Map Viewer

Finding Coordinates from Street Address
    Find the latitude & longitude of any US address

USGS: Viewing USGS Maps and Aerial Photo Images Online -The links below will take you to selected USGS Business Partner Program (BP) and Cooperative Research and Development Agreement (CRADA) partner sites where you may view USGS maps and aerial photo images from your Web browser.

ESAD - MrSid Image Server   (needs javascript on)
Query Form For The United States And Its Territories   (needs javascript on)
Gospatial Data Gateway   (needs javascript on)

Aviation [Navigation] Formulary V1.43   by Ed Williams
Ocean Color IDL Library

NGS Geodetic Tool Kit - On-line interactive computation of geodetic values.
Geodetic Software (Free for PC from NGS)
Coordinate and Datum Transformations from Chuck Taylor
Datum Conversion Software Comments from David L. Wilson
Coordinate Systems & Transformations
Geodetic Calculations (Geocentric Datum of Australia)

Documentation and Tools for Utilizing USGS Digital Raster Graphic Data

Geographic Conversion Software & Formulas  
Calculators (Navigation)

Bouy Locations - Interactive
Interactive Nautical Charts
Electronic Navigational Charts (NOAA)
Great Lakes Waypoints
Sectional Aeronautical and Terminal Area Charts
VFR Charts and Publications

GPS Tutorials
The Geographer's Craft Project Notes by Peter H. Dana
Coordinate Systems Overview
Geodetic Datum
Reference Ellipsoids & Datums
Geodetic Datum Parameter Library (Germany)
GPS Overview
Map Projections
Internet Resources for Geographers

Graphical Locator (gives elevation)
Surface Gravity Prediction in the Conterminous USA

Querying Canadian Geographical Names
Names Files of Selected Countries

GEOnet Names Server (GNS) provides access to the National Imagery and Mapping Agency's (NIMA) database of foreign geographic feature names. Approximately 12,000 of the databases 3.3 million features are updated monthly with names information approved by the U.S. Board on Geographic Names (US BGN).   Geographic Area of Coverage: Worldwide excluding the United States and Antarctica

U.S. Gazetteer is used to identify places to view with the Tiger Map Server and obtain census data from the 1990 Census Lookup server. You can search for places, counties or MCDs by entering the name and state abbreviation (optional), or 5-digit zip code.

AirNav: Navaids
AirNav: Airport Information
World Aeronautical Database
Search FAA Airport Master Record (FAA Form 5010-1)
Landings: Search for Airport Records

Supplemental Instructions for Area Navigation Approach (ANA) Surveys

National Geodetic Survey Data Sheets - Information about survey monuments on record with the National Geodetic Survey (NGS) is published in a Digital Survey DATA (DSDATA) format. The format consists of fixed field records in an 80 column ASCII text file.

How far is it? - This service uses the University of Michigan Geographic Name Server to find the latitude and longitude of two places, and then calculates the distance between them (as the crow flies). It also provides a map showing the two places, using the Xerox PARC Map Server.

Map Accuracy Standards
Reading UTM Coordinates From USGS 7.5-Minute Quads by S. Wormley
Reading UTM Coordinates From USGS DRG 7.5-Minute Quads by S. Wormley
UTM - Universal Transverse Mercator


Copyright 2011 - Samuel J. Wormley
  by swormley1@gmail.com