WELL DRAWDOWN PREDICTIONS MANUAL
WELL DRAWDOWN PREDICTIONS SOFTWARE

Hydraulic conductivity: a measure of how easily water can move through an aquifer. These tests provide information to determine fundamental aquifer characteristics including hydraulic conductivity, transmissivity, and storativity. In general, water levels, more importantly drawdown levels are monitored during aquifer characterization tests, such as pumping, slug, and constant-head tests. confined, unconfined, leaky, artesian, etc. Different tests are more suited to certain aquifer types, i.e. Each type of aquifer test puts a different stress on the aquifer system and the resulting effects are observed and used to estimate hydraulic properties. Subsurface characteristics can be determined though various aquifer tests.Īn aquifer test is a controlled field test performed on one or more monitoring wells. How do Drawdown Measurements Help Determine Aquifer Hydraulic Properties? Check out our technical bulletin “ Best Practice Low Flow Methods for Highest Quality Samples” for more details.

WELL DRAWDOWN PREDICTIONS SOFTWARE

Levelogger Data is Adjusted by Inputing 101D Water Level DrawDown Meter Measurements in the Levelogger Software Data WizardĪpplication Notes: Both 101D Water Level DrawDown Meters and 3001 Leveloggers can also be used to aid low flow sampling (monitor drawdown and help regulate pumping rates) – providing more information for a complete aquifer characterization (aquifer chemistry). These calculations done automatically in the Levelogger Software Data Wizard, instead of another spreadsheet program, saves you time.

WELL DRAWDOWN PREDICTIONS MANUAL

Manual measurements should be taken when the Levelogger is deployed, periodically during the recording period, and at the end of the monitoring period.Īfter you have downloaded the data from the Levelogger, you can use the depth to water measurements to convert Levelogger pressure readings to depth to water readings or elevation measurements to meet your specific application or model requirements. Using these two instruments together ensures accurate readings and saves you time when dealing with post data processing.Īs a QC check, you can use 101D Water Level DrawDown Meter depth to water measurements to verify the Levelogger is reading correctly.

Note: for ease of use when lowering and raising from greater depths, the Solinst 101 Power Winder can be added to a 101D reel. In execution works, the dewatering well arrangement is necessary, and it requires more excellent care owing to the settlement caused by increased effective stress.Solinst Model 101D Water Level DrawDown Meter for Manual Depth to Water and Drawdown Measurements In this paper determines the main settlement for sand aquifer restricts by a clay layer from the top because of Dewatering by a single well and water head drawdown in a confined sand aquifer is predicted using the Dupuit assumption and represented the dewatering curve using MATLAB software to validate the suggested analytical solution. Therefore, precautions must be taken to avoid these risks. In general, settlement happens more rapidly in the sand but takes considerably longer in clay and silt.

The predicted extent of damage inside the influence radius of the well point's depression cone can be calculated based on the apparent settlement of the ground and buildings and the changes in soil properties due to dewatering processes based on groundwater flow theories. After installing well pipes and begins groundwater pumping, the well's water level will drop, and groundwater will flow continuously toward the well following a period of time a curved water surface in the shape of a coneforms around the well point. It is essential to manage groundwater throughout the wellpoint construction procedure efficiently.

Well drawdown predictions