Geochemistry Links

General Infomation

• Constants, Units & Uncertainty (NIST References)

  • Fundamental Physical Constants
  • International System of Units
  • Uncertanity of Measurement Results
• NIST/SEMATECH e-Handbook of Statistical Methods

Geochemical Models

• Online Models
  •  WEB-PHREEQ, a WWW implementation of the aqueous geochemical modeling program PHREEQC by David Parkhurst of the U.S.G.S. 
    
• Software downloads
  • Visual MINTEQ is based on MINTEQA2, which is one of the most widely known chemical equilibrium models for natural waters.
  • Environmental/Hydrologic/Hydraulic/Water Quality/Water Resources
    computer models compiled and archived in the Civil & Environmental Engineering Department, Old Dominon University. All models are public domain, and has been compiled from various sources such as USEPA, USACE WES, USDA-ARS, etc. 
  • PHREEQC (Version 2)--A Computer Program for Speciation, Batch-Reaction, One-Dimensional Transport, and Inverse Geochemical Calculations
  • Software and related material (data and (or) documentation)  made available by the U.S. Geological Survey (USGS)
  • USGS Geochemical Software 
    

Journals

• Environmental Science & Technology 

Stream Flow

• STREAM TEAM home (Stream Systems Technology Center)
• Measurement and Computation of Streamflow Volume 1. Measurement Of Stage and Discharge Volume 2. Computation of Discharge Web Site   
  U.S. Geological Survey, Water Supply Paper 2175
  By S. E. Rantz and others
  
  The purpose of this manual is to provide a comprehensive description of state-of-the-art standardized stream-gaging procedures, within the scope described below. The manual is intended for use as a training guide and reference text, primarily for hydraulic engineers and technicians in the U.S. Geological Survey, but the manual is also appropriate for use by other stream-gaging practitioners, both in the United States and elsewhere.
• Chapter 5. Measurement of discharge by conventional current-meter method of above refeence (7 MB).
  
• Stream Channel Reference Sites: An Illustrated Guide to Field Technique
  by Cheryl C. Harrelson, C.L. Rawlins, and John P. Potyondy
  File: RM245e.pdf (5,175KB/67 pages)
  
  Describes procedures for establishing permanent channel reference including selecting and mapping a site, measuring channel cross-sections, surveying a longitudinal profile, identifying bankfull stage, and measuring streamflow and bed material.  Originally published in 1994 as USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, General Technical Report RM-245.

 Links

• WVU Extension Service
• PA Bureau of Abandoned Mine Reclamation