PART 2: SLUG TESTS
Hydraulic testing of unpumped wells is most often accomplished by using slug‑test methods. Slug tests rapidly change the standing water level in a well and then record the rate of recovery as the perturbed water level returns to static. An advantage of this test is that it is easy to perform and is often completed within seconds or minutes.
This photograph shows a solid weighted slug (capped white PVC pipe), pressure transducer recording box, and an electric tape used to conduct slug tests at the Naval Air Warfare Center in New Jersey, USA (USGS, 2014).