Floods & Drought Planning
The purpose of the Floods and Drought Planning Working Group is to manage floods and droughts as a single issue. Too much or too little water on the landscape must be approached as a single, integrated, complex problem set and GIS can support such opportunities to enhance integrated water resources management (IWRM).
- More Intense Floods rip up / overflow banks and uproot vegetation, which may cause sand dunes to mobilize or increase stream sedimentation and streambank erosion, degrading water quality and damaging Water and Wastewater Treatment Facilities or increasing treatment costs
- Methods Favored for which GIS data, mapping and analysis can help plan and prioritize:
- Plant TREES! esp. in urban areas!!
- Reconnect floodplains and wetlands
- Plant and restore riparian vegetation along with structural enhancements to capture every drop
- Reduce downstream flooding with upstream storage (rights)
- Store snowmelt that is now or will soon become rain,
- Control Evaporation of Reservoirs
- Store higher on landscape to trickle down in later dry season
- Do not drain directly to stream or culvert, plan buffer strips
- Low-Impact Development (LID) – UDFCD Volume III manual
- Implement policies and tech for rain-water harvesting (Tuscon)
- Examples: Hopi Raincatchers & Navajo Sand Dune Restabilization