OAR 690-217-0035
Pump Test Specifications for Flowing Artesian Wells without Pumps

If a flowing artesian well is not fitted with a pump and is normally used in an open discharge fashion, the test shall be conducted in the following manner:

(1)

The well shall be shut in for 16 hours prior to the test and the shut-in pressure recorded in the hour prior to the test.

(2)

The well shall be allowed to flow for a measured period of time of at least four hours, during which time the flow rate is to be measured and kept as constant as possible.

(3)

After the flowing period, the well shall be shut in and the pressure build-up recorded on the same schedule as described in OAR 690-217-0025 (Pump Test Specifications for Wells Other than Flowing Artesian Wells)(5) for water level recovery data collection in non-flowing well tests. Pressure build-up shall be recorded for four hours or until the pressure reaches 95 percent of the pretest shut-in pressure.

Source: Rule 690-217-0035 — Pump Test Specifications for Flowing Artesian Wells without Pumps, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=690-217-0035.

Last Updated

Jun. 8, 2021

Rule 690-217-0035’s source at or​.us