1. Piezometers

2. Introduction
A. Piezometer (def): a non-pumping well that is used to measure the elevation of the water table or the potentiometric surface

3. Introduction
A. Piezometer (def): a non-pumping well that is used to measure the elevation of the water table or the potentiometric surface

4. Introduction
A. Def: a non-pumping well that is used to measure the elevation of the water table or the potentiometric surface
B. Measures hydraulic head, or the total energy flowing through an aquifer.

5. II. Morphology
A. The criteria
1. Consists of a tube or pipe
2. Must be sealed along its entire length

6. II. Morphology
A. The criteria
1. Consists of a tube or pipe
2. Must be sealed along its entire length
3. Must be open to water flow at bottom
and open to atmosphere at top

7. II. Morphology
A. The criteria
1. Consists of a tube or pipe
2. Must be sealed along its entire length
3. Must be open to water flow at bottom
and open to atmosphere at top
4. The intake is usually slotted or
screened pipe

8. II. Morphology
A. The criteria
1. Consists of a tube or pipe
2. Must be sealed along its entire length
3. Must be open to water flow at bottom
and open to atmosphere at top
4. The intake is usually slotted or
screened pipe
B. Diagram

9. B. Diagram 6 1. Consists of a tube or pipe
2. Must be sealed along its entire length
3. Must be open to water flow at bottom and open to atmosphere at top
4. The intake is usually slotted or
screened pipe 5 3 4 3 2 1

10. III. Installation

11. IV. Uses of Piezometers
A. In general….
v, Q, K, dl, dh, S, Ss, T

12. IV. Uses of Piezometers
A. In general….
B. Spaced Piezometers

13. IV. Uses of Piezometers
A. In general….
B. Spaced Piezometers
C. Nested Piezometers

14. IV. Uses of Piezometers
A. In general….
B. Spaced Piezometers
C. Nested Piezometers
D. Equipotential and Flow Lines

15. D. Equipotential and Flow Lines

16. IV. Uses of Piezometers
A. In general….
B. Spaced Piezometers
C. Nested Piezometers
D. Equipotential and Flow Lines
E. Relationships among h, z, and Ψ

17. IV. Uses of Piezometers
E. Relationships among h, z, and Ψ

18. IV. Uses of Piezometers
E. Relationships among h, z, and Ψ

19. IV. Uses of Piezometers
E. Relationships among h, z, and Ψ

20. V. Piezometer Response to Gaining and
Losing Streams

21. Gaining and Losing Streams…..

22. VI. Examples

23. VII. 3-Point Problems

24. VII. 3-Point Problems

25. VI. Piezometer Response to Gaining and
Losing Streams