Soakaway Assessment

Knowing whether soakaway drainage might be an option for surface water drainage is a fundamental part of most developments, and to meet Sustainable Urban Drainage Systems (SUDS) requirements. The potential suitability for soakaways is based on lots of geoscience factors, include the geology of a site, if any groundwater is present and also the lay of the land as well.

Sending surface water where it wants to go
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Drain it down (where you can!)

As part of Sustainable Urban Drainage Systems (SUDS) design, the first stage on the drainage hierarchy is to mimic how water could naturally drain away; into the ground. This is commonly done using ‘soakaways’ where water is collected and then allow to drain into the underlying strata beneath a site.

At feasibility stage there are lots of things that can determine if soakaways are likely to be suitable or not at feasibility stage. Because soakaways need to be at least 5m away from any existing or proposed structures, one of the biggest consideration can be if there’s enough space for soakaways to be viable.

For sites that are either on a hillside or next to one, soakaways are not often recommend because any water introduced into the ground might seep out lower down the hillside and cause problems for other land owners or other areas. When water is put into the ground it’s important to think about where it’s going and where it might end up!

Perhaps the main consideration is what the anticipated geological conditions are, including groundwater levels. The permeability of the underlying strata determines how fast (or not!) water passes through the strata. This is often dependent on fracturing within a rock mass or layering within superficial soils, and if the strata is already saturated this can reduce the storage potential meaning, even if the permeability of the strata is good.

At Abbeydale Geoscience we readily carry out geological assessments and soakaway assessments to look at whether soakaways might be a suitable drainage option or not.

Where the geological conditions are favourable and soakaways might be feasible, the next step is to carry out a Soakaway Investigation, either as part of a wider Ground Investigation, or as a standalone investigation, to assess the permeability of the ground at the location(s) of proposed soakaways. This is important because the permeability of the ground can vary across a site, so it’s important to do any soakaway tests where they are likely or proposed to be installed.

Whether you need a soakaway assessment as a standalone assessment for drainage design purposes, or we include it as a standard item with our Phase 1 Desk Study reports, we’re here to help you from the very outset when weighing up the potential for using soakaways as a drainage option.

Need Some Help With Soakaway Assessment, Or Any Of Our Other Services?

There are so many reasons why Abbeydale Geoscience are the perfect choice for Soakaway Assessment... but we'll just list a few:

A first class Soakaway Assessment service
  • Honest, friendly and down to earth service from a team who care about you and your project. We are sure you'll find this refreshing in this day and age!
  • Soakaway Assessment carried out to a professional level by an experienced and robust geoscience team. We do it all, without any cutting of corners.
  • We provide what you need and nothing more. We don't do upselling or pushing services you don't require. We would much rather have loyalty and repeat business.

Get in touch now. Just use the contact details below. Ask us about our Soakaway Assessment service.

Abbeydale Geoscience offers a Soakaway Assessment service
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