Minnesota River Basin Statistical Trend Analysis

Minnesota River Basin Statitsical Trend Analysis

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The Minnesota River Basin Statistical Trend Analyis
summarizes statistical trend modeling results for water quality monitoring sites across the Minnesota River Basin (Basin). Water quality data from 21 stream and river monitoring stations in the Basin were analyzed for trends using two different statistical tests—QWTREND and Seasonal Kendall. The stations are distributed throughout the Basin and vary in scale from the Minnesota River itself to smaller streams such as Chetomba Creek and the Little Cobb River. Four water quality indicators were analyzed—total suspended solids, total phosphorus, orthophosphorus, and nitrate-nitrogen. Most of the data was collected over the past 10 years; although the Minnesota River stations at Mankato and St. Peter have records that go back about 40 years.  Trend analyses were performed on three mainstem, eight major tributary, and nine minor tributary monitoring sites. Results are presented in tables (Appendix B & C) and maps (Appendix D-G).



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The Minnesota River Basin Statistical Trend Analysis is available as listed below.
The report may be viewed or printed by choosing from the list of pdf files.
  Complete Report  ( pdf 588 k)

Appendix A:
Monitoring Sites Data Sheet

( pdf 70 k)

Appendix B:
Table of Results by Site

( pdf 169 k)

Appendix C:
Table of Results by Parameter 

(pdf 168 k)

Appendix D:
Total Suspended Solids Summary Map

( jpg 449 k)
  Appendix E:
Nitrate-N Summary Map
( jpg 442 k)

Appendix F:
Total Phosphorus Summary Map

( jpg 442 k)

Appendix G:
Orthophosphorus Summary Map

( jpg 445 k)
  Appendix H:
Comparison with Other Trend Studies
( pdf 71 k)

Other Reports: Reports
  State of the Minnesota River Reports
  Minnesota River Basin Trends Report

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This page was last updated 11/09
Minnesota River Basin Data Center | Minnesota State University, Mankato
184 Trafton Science Center S, Mankato, MN 56001
Phone: (507)389-5492 | FAX: (507)389-5493 | Email: mrbdc@mnsu.edu