“Interflow is often the dominant drainage path in glaciated landscapes of British Columbia. Even undeveloped sites founded on till and bedrock rarely show overland flow because of interflow pathways. The lesson is that the interflow system is an incredibly important and yet fragile component of a watershed. It is critical for maintaining stream health and our fishery resource,” states Al Jonsson of DFO.
“Member municipalities will develop a coordinated program to monitor stormwater and assess and report the implementation and effectiveness of Integrated Storm Water Management Plans (ISMP). Metro Vancouver and member municipalities are encouraged to have land use planning consider the direction provided by the ISMPs. Coordination with municipal planners will be important to successful integration," wrote Environment Minister Terry Lake.
“Conditions that apply to the approved Metro Vancouver plan highlight the importance of land use planning in protecting stream health. The conditions focus attention on how the degree, type and location of land development can affect the long-term health of the watershed,” summarized Avtar Sundher, Ministry of Environment, in a 2011 statement
"The genesis for Integrated Stormwater Management Plans was a desire to integrate the community, engineering, planning and environmental perspectives. The implicit goal was to build and/or rebuild communities in balance with ecology. Local governments knew they had to do business differently to restore watershed health," stated Robert Hicks.