Category: hazards

• Development threats to runoff in the Upper Mole Basin

  

  Analysis of potential impacts on runoff and river flow of three developments in the Upper Mole basin.

  sirgeogy

  December 7, 2022

  Conservation, Flood defence, Gatwick airport, hazards, lag time, River Mole

  flood risk assessment, River Mole, River Mole drainage basin

• The 1968 Mole Flood

  

  The worst recorded flooding in the River Mole was in 1968 when a rare 1:200 year storm caused rainfall to exceed 100mm in 24 hours and a staggering discharge over 240 cumecs in the Lower Mole (see extract below).  For comparison, the average discharge of the River Thames in London is 65 cumecs and the average September…

  sirgeogy

  November 9, 2022

  flood, Floods, hazards, River Mole, storm

• 2013 Flooding on the River Mole: causes, impacts and management

  

  The River Mole is a modest lowland river in SE England that rises near Rusper in the wooded hilly heartland of the Surrey / Sussex Weald, near Crawley and Horsham. The Mole and its tributaries flow broadly north, through Crawley, around and under Gatwick airport, before meandering through mostly rural countryside to Dorking. The Mole…

  sirgeogy

  January 4, 2014

  flood, Flood defence, Floods, Gatwick airport, hazards, Reigate, River Mole

  flood hazards, flood risk assessment, Gatwick airport, geography, hazard impacts, hazard responses, risk, River Mole, River Mole drainage basin, River Thames