Introduction to Groundwater Monitoring
Study Guide Exam Questions And Actual
Answers.
Define aquifer - Answer saturated geologic unit that can store transmit and yield groundwater
in sufficient quantity to constitute a usable supply
What is the upper boundary in an unconfined aquifer - Answer water table
What is the lower boundary in an unconfined aquifer - Answer impervious layer
What is the potentiometric surface - Answer the height the water could potentially rise to if
the confined aquifer is tapped by a well
When do flowing artesian conditions occur - Answer when the potentiometric surface is above
the top of the well casing
Wells must be constructed and installed properly to permit accurate measurement of what
three things - Answer Groundwater elevation, in-situ hydraulic conductivity testing and aquifer
testing
Stainless steel, corrugated galvanized steel, PVC pipe, and concrete - Answer What are four
types of casing materials
What is the size of the outer diameter for the casing of a drilled well - Answer 5 to 6 inches
What is the size of the outer diameter for the casing of a bored well - Answer 24 to 48 inches
What is the maximum installation depth of a groundwater well - Answer 300m
Horizontal hydraulic conductivity is determined by conducting what test - Answer slug test
Name three unconsolidated surficial deposits - Answer colluvial, fluvial,lacustrine
, Describe glaciofluvial - Answer deposited by glacial melt water channels
What is a nested piezometer - Answer multiple piezometers installed side by side with screens
or intakes set at different depths
What are nested piezometers used to determine - Answer Vertical hydraulic gradient
The upper boundary of the unconfined aquifer is at ___ pressure - Answer atmospheric
Recharge of an aquifer occurs from what type of water movement - Answer Percolation
What type of formation does not contain water - Answer Aquifuge
Of the type of formations that contain water which one has the lowest permeability - Answer
Aquiclude
Name two objectives of GW level monitoring - Answer assessing depth to water level,
detecting impact of GW recharge and discharge
Name two objectives of GW quality monitoring - Answer tracking changes in GW quality,
identifying potential contaminant sources
What does darcy's law describe - Answer the flow of fluid through a porous and fractured
media
What are the two assumptions of darcy's law - Answer laminar flow, and saturated medium
What is porosity - Answer a measure of the void spaces in a formation
What is effective porosity - Answer porosity available to contribute to fluid flow
Porosity not considered effective includes what - Answer unconnected pores, water bound to
clay particles
Study Guide Exam Questions And Actual
Answers.
Define aquifer - Answer saturated geologic unit that can store transmit and yield groundwater
in sufficient quantity to constitute a usable supply
What is the upper boundary in an unconfined aquifer - Answer water table
What is the lower boundary in an unconfined aquifer - Answer impervious layer
What is the potentiometric surface - Answer the height the water could potentially rise to if
the confined aquifer is tapped by a well
When do flowing artesian conditions occur - Answer when the potentiometric surface is above
the top of the well casing
Wells must be constructed and installed properly to permit accurate measurement of what
three things - Answer Groundwater elevation, in-situ hydraulic conductivity testing and aquifer
testing
Stainless steel, corrugated galvanized steel, PVC pipe, and concrete - Answer What are four
types of casing materials
What is the size of the outer diameter for the casing of a drilled well - Answer 5 to 6 inches
What is the size of the outer diameter for the casing of a bored well - Answer 24 to 48 inches
What is the maximum installation depth of a groundwater well - Answer 300m
Horizontal hydraulic conductivity is determined by conducting what test - Answer slug test
Name three unconsolidated surficial deposits - Answer colluvial, fluvial,lacustrine
, Describe glaciofluvial - Answer deposited by glacial melt water channels
What is a nested piezometer - Answer multiple piezometers installed side by side with screens
or intakes set at different depths
What are nested piezometers used to determine - Answer Vertical hydraulic gradient
The upper boundary of the unconfined aquifer is at ___ pressure - Answer atmospheric
Recharge of an aquifer occurs from what type of water movement - Answer Percolation
What type of formation does not contain water - Answer Aquifuge
Of the type of formations that contain water which one has the lowest permeability - Answer
Aquiclude
Name two objectives of GW level monitoring - Answer assessing depth to water level,
detecting impact of GW recharge and discharge
Name two objectives of GW quality monitoring - Answer tracking changes in GW quality,
identifying potential contaminant sources
What does darcy's law describe - Answer the flow of fluid through a porous and fractured
media
What are the two assumptions of darcy's law - Answer laminar flow, and saturated medium
What is porosity - Answer a measure of the void spaces in a formation
What is effective porosity - Answer porosity available to contribute to fluid flow
Porosity not considered effective includes what - Answer unconnected pores, water bound to
clay particles
