Depth sensor calibration
The concepts underlying how an automated water depth sensor works will be addressed in the main video for chapter 17. In advance of that, we will use this Friday lab time to gain experience with calibrating a sensor, using a depth sensor as the test case.
Videos to illustrate chapter 16-17 concepts about subsurface sediment, groundwater, and wells
Outline: 42 minutes of online videos
- Video 1 shows all phases of well design, construction, and use for a residential home.
- Video 2 shows more details about simple well case installation
- Video 3 show direct push installation of a small-diameter well casing that includes prepacked screens
- Video 4 shows an example of well development
- Video 5 shows groundwater sampling at a monitoring well
- Chapter 12: pages 223-237
Related web links:
External Video: All Phases of Well Construction
This 10-minute video shows all phases of construction of a pumping well with a balance of animations and real activity. It shows infomration about pumping that was not presented in the video podcasts.
External Video: Simple Well Casing Installation
This 3-minute video illustrates how a plastic, large-diameter well casing may be installed into a pre-drilled hole and then surrounded with a gravel pack in the screened interval and a cement seal above the gravel pack.
External Video: Direct Push To Install Prepacked Screens & well Casing
This 9-minute video illustrates how direct push, dual-tube coring with a solid point can be used to push sediment out of the way and install a plastic well casing wherein the screened interval includes a built in gravel pack to insure the highest quality and positioning of the pack outside the screen. Then addiitonal gravel pack and a grout seal is added around the well casing.
External Video: Well Development
This 1.5-minute video illustrates how pressurized jets of water can be used to "develop" a well.
External Video: Groundwater Sampling Video
This 18-minute video from the Washington Department of Ecology illustrates several approaches to sampling well water for different purposes.