BaSIM

Infiltration Basin Design and Clogging Assessment

📋 Project Details

Project Name

Scenario Name

Project Code ⓘ

$10 AUD = 1,000 simulations; $100 AUD = 10,000 simulations. Pricing and eligibility

📍 Site Location

Click the map or enter coordinates

Latitude

Longitude

WA Soil Type ⓘ Checking selected location…

🏠 Catchments

🌧️ Storm Settings

Inflow source Generate runoff from ARR/BoM rainfall Route uploaded inflow hydrographs

AEP to analyse

Storm Durations Select / Deselect All

🪨 GAH-3D Basin Design

Field-Tested Ks (Vertical, Kv) [Learn more in the Technical Reference Manual] ⓘ

Aquifer Hydraulic Conductivity (Kh) [Learn more in the Technical Reference Manual] ⓘ

Soil Moderation Factor (U) ⓘ

Basin Geometry

Base Length (m)

Base Width (m)

Side Slope (1:X)

Max Depth (m)

Basin Soil Type Defaults

Advanced Parameter Input

Soil Parameters

Using soil-type defaults. Switch to "Specify custom values" to edit manually.

Initial Moisture Deficit (Δθ)

Capillary Suction Head (ψ) [m]

Groundwater Parameters

Specific Yield (Sy)

Basin Invert Level (m AHD)

Design Groundwater Level (m AHD)

Base Aquifer Level (m AHD)

🔧 Hydraulic Structures

Optional outflow structures that extract water from the basin surface. Multiple structures may be added. Structures operate on the surface storage; the infiltration + mounding mechanics are unchanged.

Enable hydraulic structures

🌡️ Climate Change Scenario

SSP Scenario

(i) Historical — only to be used for historical assessments

📐 Design Preview

Live 2D section & plan. Updates as you edit geometry, groundwater and hydraulic structures — before you run. After a run, the section shows the critical ponded water level and peak groundwater mound.

Click the map to set your site location, configure your
catchments and soil parameters, then press Run Analysis.

Results Summary

Critical Event	Duration & Rank	Peak Vol (m³)	Peak Depth (m)	Peak Mound (m)	Exceeds Allowable?	Spilled Vol (m³)

Select Duration:

Maintenance Planning — Clogging Impact Timeline

Full multi-year analysis with groundwater mounding — for maintenance scheduling.

Required, not optional. The basin must be designed for its end-of-life (clogged) performance. Agree the clogging parameters (K, thickness) and timeline (years) with the asset owner before running.

Analysis Years

Final Clogged K (m/day)

Final Clogged Thickness (m)

AEP	Duration (min)	Temporal Pattern	Peak Flow (m³/s)	Volume (m³)	Time to Peak (min)