From LID SWM Planning and Design Guide
Hydrogeological data in Ontario
Darcy DrainageNatural or artificial means of intercepting and removing surface or subsurface water (usually by gravity).
Beta version drainage spreadsheet
STEP adaptation of USGS macro spreadsheet
LIDLow Impact Development. A stormwater management strategy that seeks to mitigate the impacts of increased urban runoff and stormwater pollution by managing it as close to its source as possible. It comprises a set of site design approaches and small scale stormwater management practices that promote the use of natural systems for infiltration and evapotranspiration, and rainwater harvesting. lifecycle costing
Relevant wiki pages