                                                1_README.TXT
  
  Levels at Streamflow Gaging Stations--A CD-ROM Based 
  Training Class
  
  By K. Michael Nolan, Nathan Jacobson, Robert Erickson, and 
  Stanley Landon
  
  Water Resources Investigations Report 03-4002
  
  2003
  
  U.S. DEPARTMENT OF THE INTERIOR
  Gale Norton, Secretary
  
  U.S. GEOLOGICAL SURVEY
  Charles G. Groat, Director
  
  
  ISBN:  0-607-92620-1
  
  
  For sale by
  
  USGS Information Services
  Box 25286, Building 810
  Denver Federal Center
  Denver, CO 80225
  (888) ASK-USGS
  
  
  QUICK START
  
  For those already familiar with executable files, simply 
  open the file Wri-4002.exe.  For those familiar with HTML 
  files and browsers, open the file "Intro.html".
  
  
  SUMMARY
  
  Streamgages record the elevation of the water surface above 
  some reference surface, or datum.  This datum is assumed to 
  remain unchanged throughout the life of the gage.  However, 
  the elevation of gages and their supporting structures 
  commonly change over time as a result of Earth movement, 
  floods, ice, and debris.  The surveying practice of 
  leveling is used to establish datum for new gage structures 
  and to check for vertical movement of those structures over 
  time.  Vertical changes in gage structures can affect 
  stage-discharge relations and can, therefore, result in 
  incorrect discharge determinations.  Datum checks are used 
  to correct stage-discharge relations and allow the U.S. 
  Geological Survey to document gage datum throughout the 
  life of a gage.  
  
  This training presentation describes methods currently used 
  by the USGS to run levels at gaging stations.  The 
  presentation is narrated, but you control the pace of the 
  presentation.  If the computer you are using can view 
  "MPEG" videos you will be able to take advantage of videos 
  found within the presentation.  A test, found at the end of 
  the presentation, can be taken to assess how well you 
  understood the training material.  The class is registered 
  as class SW1307 with the National Training Center of the 
  U.S. Geological Survey. 
  
  The presentation was developed using Macromedia Director 
  8.5(1) and is contained in the file "WRI-4002.exe", which 
  should auto-launch after the CD-ROM is inserted in the PC.  
  The program only runs on a Windows(2)-based personal 
  computer (PC).  A sound card and speakers are necessary to 
  take advantage of the narration that accompanies the 
  presentation.  Text of narrations is provided, if you are 
  unable to listen to the narrations.  The computer you are 
  using must be connected to the Internet to take advantage 
  of links to on-line resources.  
  
  Instructions for installing and running the presentation 
  are included in the file "Intro.html".  The file 
  "Intro.html" is on the CD-ROM containing the presentation 
  and is available from the presentation's help menu.  
  
  ACROBAT
  
  Adobe(3) Acrobat(3) Reader: The Acrobat directory contains 
  installers for Adobe Acrobat Reader 5.0.5, 5.1 and 6.0 for 
  Windows.  The installers are provided on this disc, or can 
  be downloaded as the latest version of Adobe Acrobat 
  Reader, free from the Adobe website, http://www.adobe.com/. 
  Acrobat Reader is required to open .pdf files.  
  
  
  EXCEL AND WORD
  
  Microsoft(2) Excel(2) files - These xls files will open 
  with current versions of Microsoft Excel.  Microsoft 
  Word(2) files - These .doc files will open with current 
  versions of Microsoft Word.
  
  
  DISCLAIMERS
  
  This Compact Disc-Read-Only-Memory (CD-ROM) publication was 
  prepared by an agency of the United States Government. 
  Neither the United States Government nor any agency 
  thereof, nor any of their employees, makes any warranty, 
  expressed or implied, or assumes any legal liability or 
  responsibility for the accuracy, completeness, or 
  usefulness of any information, apparatus, product, or 
  process disclosed in this report, or represents that its 
  use would not infringe privately owned rights. Reference 
  therein to any specific commercial product, process, or 
  service by trade name, trademark, manufacturer, or 
  otherwise does not necessarily constitute or imply its 
  endorsement, recommendation, or favoring by the United 
  States Government or any agency thereof.
  
  Although all data and software published on this CD-ROM 
  have been used by the USGS, no warranty, expressed or 
  implied, is made by the USGS as to the accuracy of the data 
  and related materials and (or) the functioning of the 
  software. The act of distribution shall not constitute any 
  such warranty, and no responsibility is assumed by the USGS 
  in the use of this data, software, or related materials.
  
  Registered Trademark: 
  (1) Macromedia Inc.
  (2) Microsoft, Inc.
  (3) Adobe Systems, Inc.
  
