Crum-Ridley-Chester Volunteer Water Monitors - Data for Ridley Creek, Rosetree Road, (R250).

• Table 1: Dates and weather conditions of the site checks.
• Table 2: Dates and water chemistry data (from La Mott AM-22 test kits).
• Explanation of Variables.
• Please Read This Comment.

This page is maintained by Bruce W. Grant, Department of Biology, Widener University, Chester, PA, 19013, 610-499-4017, fax: 610-499-4059. grant@pop1.science.widener.edu .

Last updated: 2 October 1997.

Ridley Creek, Rosetree Road, (R250), Delaware Co., PA.

Table 1: Dates and weather conditions of the site checks.

Ridley Creek, Rosetree Road, (R250), Delaware Co., PA.

Table 2: Dates and water chemistry data.

• T_A = shaded air temperature in ^oC, measured by hand-held glass thermometer.
• Cloud = cloud cover during the site check of {ALL, MOST, PART, CLEA}
• Wind = wind conditions during the site check of {HIGH, BREE, CALM}
• Rain Now = rainfall during the site check of {HEAV, MODR, DRIZ, NONE}
• Rain <24 = rainfall during 24 hours previous to the site check of {HEAV, MODR, LIGH, NONE}
• Ice = creek ice cover during the site check of {MOST, MUCH, RARE, NONE}
• Comment = any written comments by the data collector or editor
• Turbid = turbidity in Jackson Turbidity Units (JTU)
• O₂  = dissolved oxygen in parts per million (ppm)
• T_W = water temperature in ^oC, measured by hand-held glass thermometer.
• T.Alk. = total alkalinity in parts per million (ppm)
• Ph.Alk. = phenalphaline alkalinity in parts per million (ppm)
• NH₄ = ammonia in parts per million (ppm)
• CO₂ = carbon dioxide in parts per million (ppm)
• Chlor. = chloride in parts per million (ppm)
• T.Hard. = total hardness in parts per million (ppm)
• C.Hard. = calcium hardness in parts per million (ppm)
• Nitr. = nitrate in parts per million (ppm)
• Phos. = phosphate in parts per million (ppm)
• Sulf. = sulfide in parts per million (ppm)

Missing data and empty data fields are held by periods "."

Beware of non-numeric relational data (e.g., >35) imbedded in the numerical data columns.

Please Read This Comment.

      You are welcome to download some or all of the material posted at this site for your use in your research and teaching. This does not include commercial uses for profit. If you do use any of the data posted at this site, you are requested to formally acknowledge this site and/or sites listed by this site as the source(s), and email me, Bruce W. Grant, at grant@pop1.science.widener.edu describing how you have used these data. Your comments are useful in inspiring others to better integrate all of our efforts in protecting our watersheds, and I will post selected comments at this site.

Disclaimer:

      These data were collected by citizen volunteers using relatively inexpensive and low technology field methods, water chemistry kits, etc. We have taken reasonable precautions to assure quality control over the data posted at this site (including monitor training and re-training sessions and replacment of chemical reagents for the water quality kits in a timely manner); however, we cannot guarantee data accuracy. In addition, adult supervision is recommended when collecting water quality data, and we recommend that common sense and proper safety precautions be followed by all participants.

       No responsibility is implied or taken by any members of the Crum-Ridley-Chester Volunteer Water Monitoring Group, nor by the webmaster - Dr. Bruce W. Grant, nor Dr. Grant's employer - Widener University, for (1) any uses of the data posted at this site for research, teaching, management, consulting, policy development, or any other use, and (2) for any person who sustains injuries as a result of collecting water quality data either inspired by the efforts of the CRCVWM Group, with or without the intention of contributing data to the CRCVWM Group, or related to any other activity that could derive from the CRCVWM Group.

Copyright - Bruce W. Grant, 1997.