You are here

General Information for Teachers > Understanding Surface Water and Groundwater Interactions


Learning Objectives

  1. Understand the relationship between surface water and groundwater, particularly in karst terrains.
  2. Learn to use graphs to extract meaningful information from large data sets.
  3. Gain experience using technology (computer and graphing software packages) to manipulate data.

Time Frame – 150 minutes (2.5 hours). We show an outline for three 50-minute class periods.


TXESS Revolution teachers establish a cadence for the 'walk' or S wave rate as part of the activity during PDA3a in 2009.TXESS Revolution teachers establish a cadence
for the 'walk' or S wave rate as part
of the activity during PDA3a in 2009.

(Photo courtesy H.C.Olson)

Time Breakdown

  • Teacher’s introduction to groundwater, karst, and the Edwards Aquifer: 50 minutes
  • Teacher’s introduction to hydrographs and instructions: 15 minutes
  • Student graphing Hydrograph One: 20 minutes
  • Student assessment of Hydrograph One: 15 minutes
  • Student graphing Hydrograph Two: 15 minutes
  • Student assessment of Hydrograph Two: 20 minutes
  • Class discussion/assessment of Hydrograph Three: 25 minutes

Suggested Agenda/Timetable

  • Day 1. (Classroom) Teacher introduces background information through a PowerPoint presentation, Introduction to groundwater, karst, and the Edwards Aquifer.
  • Day 2. (Computer Lab/Classroom)  Teacher introduces hydrographs through the short PowerPoint entitled, Hydrograph and introduces the activity. Students complete Hydrograph One and corresponding assessment.
  • Day 3. (Computer Lab / Classroom)  Students complete Hydrograph Two and the corresponding assessment. All the Hydrograph Two’s are posted in succession to complete Hydrograph Three. Teacher leads discussion on Hydrograph Three.

Materials Required

Equipment and Supplies

  • Computer with Microsoft Excel per group of two students

Downloadable Files