Track A - Water Resources Center - University of Minnesota
Track A - Water Resources Center - University of Minnesota Track A - Water Resources Center - University of Minnesota
Groundwater Inflow • Most important determinant of water temperatures in groundwater-fed streams • Discharge • Lentz farm • Stream velocity • Shade • Source of resurgence • Water table vs. interflow Artisan spring on Ralph Lentz farm: 400 gallons /minute
Implications for Climate Change • Streams in northerly climates do not always follow unity at air temperatures > 20 o C • Suggested by Mohensi & Stefan, 2000 • Varies from stream to stream: some level slightly, some follow unity and some produce more scatter • Streams that follow unity and have high R 2 values are most promising as predictive tools • Streams with higher slopes and lower intercepts are more susceptible
- Page 1 and 2: Lori A. Krider Joseph A. Magner Jim
- Page 3 and 4: Importance • Air temperatures are
- Page 5 and 6: Temperature ( o C) Time Frame •
- Page 7 and 8: Data Source • Water temperature d
- Page 9 and 10: Terminology • Regressions explain
- Page 11 and 12: Results Summary & Comparison • Sl
- Page 13 and 14: Average Weekly Water Temperature (C
- Page 15 and 16: Contributing Factors • Factors th
- Page 17: Other Findings • Could not provid
- Page 21 and 22: Management for Mitigation •Increa
- Page 23 and 24: Natural short-term declines in curl
- Page 25 and 26: Sustaining Lakes in a Changing Envi
- Page 27 and 28: Genesis: Serendipity • Noticed de
- Page 29 and 30: Decline in surface growth in Pearl
- Page 31 and 32: Curly-leaf pondweed life history
- Page 33 and 34: Curly-leaf pondweed life history
- Page 35 and 36: Back to the question - Curlyleaf de
- Page 37 and 38: Growing Season Differences?
- Page 39 and 40: Nah that’s not it - 2010 was actu
- Page 41 and 42: Nah that’s not it - spring water
- Page 43 and 44: Links to ice cover duration? In oth
- Page 45 and 46: Days of Ice 180 160 140 120 100 80
- Page 47 and 48: EUREKA!!
- Page 49 and 50: Findings • Winters during most of
- Page 51 and 52: Dec. + Jan. Snowfall (in) Departure
- Page 53 and 54: Implications of Climate Change •
- Page 55 and 56: Critical Temp Thresholds High turio
- Page 57 and 58: Summary • Winter possibly plays s
- Page 59 and 60: Acknowledgments • DNR Area Fisher
- Page 61 and 62: Acknowledgements Will French Jennif
- Page 63 and 64: Introduction Trout streams in SE M
- Page 65 and 66: A Conceptual Model Climate ? Geomor
- Page 67 and 68: Sampling Sites 12 stream reaches i
Groundwater Inflow<br />
• Most important<br />
determinant <strong>of</strong> water<br />
temperatures in<br />
groundwater-fed streams<br />
• Discharge<br />
• Lentz farm<br />
• Stream velocity<br />
• Shade<br />
• Source <strong>of</strong> resurgence<br />
• <strong>Water</strong> table vs. interflow<br />
Artisan spring on Ralph Lentz farm:<br />
400 gallons /minute
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