Natural Treatment of Stormwater

B3Natural Treatment of Stormwater

8 points possible

Why this matters to the lake?

The healthy, forested landscape that is native to Lake George acts like a sponge when it rains, absorbing rainfall and filtering the water through the soils to remove pollutants, actions crucial to keeping the lake clean and clear.  A healthy forest with mature trees, understory, and leaf litter will absorb nearly all rain that falls except from the largest and most intense storms. Mature vegetation with deep roots promotes infiltration and natural uptake. Stormwater storage provided by natural depressions can attenuate runoff and facilitate vernal pool establishment.


  • Create built landscapes that mimic a forest by holding water and reducing the volume of runoff
  • Recreate natural hydrology
  • Improve water quality in the lake by reducing the amount of stormwater runoff and pollutants that reach the lake
  • Improve techniques for stormwater management


  • Up to two points are awarded for reducing runoff by disconnection.
  • Up to one point is awarded for using infiltration. 
  • Up to two points are awarded for using vegetated treatment systems.
  • Up to two points are awarded for spreading stormwater controls throughout site (close to source) limiting conveyance. 
  • One point is awarded for increasing time of concentration (Tc). 

Redevelopment Prerequisite: Redevelopment projects shall require stormwater management for all existing and proposed impervious surfaces. Management requirements are 1.5 gallons per square foot of impervious area. 

Note: If the stormwater from a portion of a project area cannot be captured due to topography or other constraints, the project may propose an alternative, such as managing stormwater from a nearby existing impervious surface subject to the same criteria as above.


Include the following information with application:

  • As part of the Proposed Site plan:
    • Provide a narrative and supporting calculations that document disturbed area, impervious area, volume of runoff and compliance with Lake George Park Commission regulations.
    • Provide a narrative and supporting calculations that indicate time of concentration (Tc), the drainage area and impervious area managed by a stormwater measure. 
    • Show the appropriate stormwater control measures as well as stormwater permit from the Lake George Park Commission if in the Town of Putnam, Hague, Dresden, Fort Ann or Ticonderoga, or a permit from the Town of Lake George, Bolton, Queensbury,  or Lake George Village.
  • Document that stormwater measures are:
    • Not located on steep or very steep slopes.
    • Not located within a stream, wetland, or lake setback area. 
    • Will not result in the removal of native trees over 4-inch caliper.  

Other Resources

Existing Regulatory Guidance/Requirements

Lake George Park Commission, Part 646-4 – Stormwater Management

Town of Queensbury Town Code Chapter 147 - Stormwater Management.

Lake George Town Ordinance, Chapter 175-21- Erosion, sedimentation and stormwater runoff control.

Lake George Village Ordinance, Chapter 220 - Article IX - Stormwater Management Regulations

Bolton Town Ordinance, Chapter 125 – Stormwater and Erosion Control

Lake George Park Commission, Permit Forms