Maricopa Community Colleges  WRT258   19926-20045 
Official Course Description: MCCCD Approval: 05/26/92
WRT258 19926-20045 LAB 1 Credit(s) 3 Period(s)
Surface Water Field Techniques
Field exercises to acquire surface water data and service data gathering equipment. Safety procedures stressed. Prerequisites or Corequisites: WRT250 or permission of department.
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MCCCD Official Course Competencies:
 
WRT258   19926-20045 Surface Water Field Techniques
1. Use specific types of gages to measure rainfall and record data using continuous and discrete methods of data gathering. (I)
2. Record measurements of water evaporation using evaporation pans and atmometers. (II)
3. Explain accuracy of "estimation of evaporation". (II)
4. Describe the use of phytometers in determining transpiration. (III)
5. Record lysimeter measurements and groundwater fluctuation to determine levels of evapotranspiration. (III)
6. Use infiltration and hydrograph analyses to determine levels of infiltration. (IV)
7. Demonstrate the steps and apply the methods for determining velocity, depth and discharge of streamflows. (V)
8. Use and service gaging stations' equipment. (V)
9. Compute run-off from streamflow measurements. (V)
10. Apply specific methods for determinig peak discharge for streamflow. (V)
11. Apply safety procedures during all field assignments. (I-V)
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MCCCD Official Course Outline:
 
WRT258   19926-20045 Surface Water Field Techniques
    I. Rainfall
        A. Types of gages
          1. recording gages
          2. buckets
        B. Records of rainfall-data
          1. continuous
          2. discrete
        C. Safety
      II. Evaporation
          A. Measurement of evaporation
            1. evaporation pans
            2. atmometers
          B. Estimation of evaporation
          C. Crop consumptive use
          D. Safety
        III. Transpiration
            A. Determination of transpiration - phytometer
            B. Evapotranspiration
              1. lysimeter measurements
              2. groundwater fluctuations
          IV. Infiltration
              A. Infiltrometers
              B. Hydrograph analyses
              C. Safety
            V. Streamflow Measurement
                A. Determination of stage
                B. Methods of velocity measurement
                  1. velocity meters
                  2. radioactive tracers
                C. Velocity observation
                D. Determination of depth
                E. Discharge measurements
                  1. wading in streams
                  2. note taking
                  3. determination of velocity/area
                  4. computation of flow
                  5. safety
                F. Gaging stations
                  1. servicing equipment
                  2. safety
                G. Stage-discharge relation
                H. Computation of run-off
                I. Indirect determinations of peak discharge
                  1. identifying high water marks
                  2. estimating roughness coefficients
                  3. surveying
                J. Safety
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