Dewatering - Calculator

Dewatering - Calculator

A Calculator tool to assist with estimating the Radius of Influence, Pumping Rates and Time taken to establish drawdown within an excavation.

A Calculator tool to assist with estimating the Radius of Influence, Pumping Rates and Time taken to establish drawdown within an excavation.

A Calculator tool to assist with estimating the Radius of Influence, Pumping Rates and Time taken to establish drawdown within an excavation.

Install Dates Available

Install Dates Available

Install Dates Available

Install Dates Available

Dewatering Calculations Backed by Proven Empirical Methods.
Empirical formulas are a trusted starting point for estimating the groundwater cone of depression, pump rates, and drawdown timelines, essential insights for effective excavation dewatering.

At Poseidon Water, we provide industry-validated tools to help you calculate these initial parameters with confidence. But we don’t stop there


Dewatering Calculations Backed by Proven Empirical Methods.
Empirical formulas are a trusted starting point for estimating the groundwater cone of depression, pump rates, and drawdown timelines, essential insights for effective excavation dewatering.

At Poseidon Water, we provide industry-validated tools to help you calculate these initial parameters with confidence. But we don’t stop there


Dewatering Calculations Backed by Proven Empirical Methods.
Empirical formulas are a trusted starting point for estimating the groundwater cone of depression, pump rates, and drawdown timelines, essential insights for effective excavation dewatering.

At Poseidon Water, we provide industry-validated tools to help you calculate these initial parameters with confidence. But we don’t stop there


Dewatering Calculations Backed by Proven Empirical Methods.
Empirical formulas are a trusted starting point for estimating the groundwater cone of depression, pump rates, and drawdown timelines, essential insights for effective excavation dewatering.

At Poseidon Water, we provide industry-validated tools to help you calculate these initial parameters with confidence. But we don’t stop there


Important: These estimates are just the first step. For safe and successful dewatering, detailed hydrogeological analysis must follow before any onsite work begins.


Important: These estimates are just the first step. For safe and successful dewatering, detailed hydrogeological analysis must follow before any onsite work begins.


Important: These estimates are just the first step. For safe and successful dewatering, detailed hydrogeological analysis must follow before any onsite work begins.


Important: These estimates are just the first step. For safe and successful dewatering, detailed hydrogeological analysis must follow before any onsite work begins.


In the absence of site-specific hydraulic data, default hydraulic conductivity values (K) can be used and are listed below for a variety of Australian soil types.


In the absence of site-specific hydraulic data, default hydraulic conductivity values (K) can be used and are listed below for a variety of Australian soil types.


In the absence of site-specific hydraulic data, default hydraulic conductivity values (K) can be used and are listed below for a variety of Australian soil types.


In the absence of site-specific hydraulic data, default hydraulic conductivity values (K) can be used and are listed below for a variety of Australian soil types.



  • In the absence of site-specific information, the saturated thickness of superficial aquifers may be obtained from: Perth Groundwater Atlas, Second Edition (Department of Environment, 2004) for sites in the Perth metropolitan region; and from information held by the Department of Water (for sites elsewhere in the State). www.water.wa.gov.au/idelve/gwa/

  • Adapted from Davidson, W.A., 1995, Bulletin 142: Hydrogeology and Groundwater Resources Of The Perth Region, Western Australia, Geological Survey Of Western Australia. 

  • Hemond,H.F. and Goldman, J.C., 1985, On non-Darcian water flow in peat. Journal of Ecology, 73, 578-584



  • In the absence of site-specific information, the saturated thickness of superficial aquifers may be obtained from: Perth Groundwater Atlas, Second Edition (Department of Environment, 2004) for sites in the Perth metropolitan region; and from information held by the Department of Water (for sites elsewhere in the State). www.water.wa.gov.au/idelve/gwa/

  • Adapted from Davidson, W.A., 1995, Bulletin 142: Hydrogeology and Groundwater Resources Of The Perth Region, Western Australia, Geological Survey Of Western Australia. 

  • Hemond,H.F. and Goldman, J.C., 1985, On non-Darcian water flow in peat. Journal of Ecology, 73, 578-584



  • In the absence of site-specific information, the saturated thickness of superficial aquifers may be obtained from: Perth Groundwater Atlas, Second Edition (Department of Environment, 2004) for sites in the Perth metropolitan region; and from information held by the Department of Water (for sites elsewhere in the State). www.water.wa.gov.au/idelve/gwa/

  • Adapted from Davidson, W.A., 1995, Bulletin 142: Hydrogeology and Groundwater Resources Of The Perth Region, Western Australia, Geological Survey Of Western Australia. 

  • Hemond,H.F. and Goldman, J.C., 1985, On non-Darcian water flow in peat. Journal of Ecology, 73, 578-584



  • In the absence of site-specific information, the saturated thickness of superficial aquifers may be obtained from: Perth Groundwater Atlas, Second Edition (Department of Environment, 2004) for sites in the Perth metropolitan region; and from information held by the Department of Water (for sites elsewhere in the State). www.water.wa.gov.au/idelve/gwa/

  • Adapted from Davidson, W.A., 1995, Bulletin 142: Hydrogeology and Groundwater Resources Of The Perth Region, Western Australia, Geological Survey Of Western Australia. 

  • Hemond,H.F. and Goldman, J.C., 1985, On non-Darcian water flow in peat. Journal of Ecology, 73, 578-584


Need a Reliable Dewatering Plan? Start with the Right Data.
Whether you're managing a complex excavation or need site-specific dewatering design, our experts are here to help. Poseidon Water offers:

  • Accurate drawdown calculations using empirical models

  • Specialised advance dewatering tools for complex projects

  • Site-specific dewatering design recommendations

  • Expert review to avoid over-pumping or system failure

  • Support from start to finish, from planning to implementation



Want Tailored Dewatering Support Today?

Don’t leave your dewatering strategy to guesswork. Partner with Poseidon Water for dependable, data-driven results. Talk to a dewatering expert today and get the clarity your project needs to move forward with confidence.

Want Tailored Dewatering Support Today?

Don’t leave your dewatering strategy to guesswork. Partner with Poseidon Water for dependable, data-driven results. Talk to a dewatering expert today and get the clarity your project needs to move forward with confidence.

Want Tailored Dewatering Support Today?

Don’t leave your dewatering strategy to guesswork. Partner with Poseidon Water for dependable, data-driven results. Talk to a dewatering expert today and get the clarity your project needs to move forward with confidence.

Want Tailored Dewatering Support Today?

Don’t leave your dewatering strategy to guesswork. Partner with Poseidon Water for dependable, data-driven results. Talk to a dewatering expert today and get the clarity your project needs to move forward with confidence.

Trusted by Industry experts

Trusted by Industry experts