The Problem is the Solution

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Presentation transcript:

The Problem is the Solution Presented by James Spicer of Green Country Permaculture

Storm Runoff Definition:Precipitation not absorbed by the landscape Patterns: Confluential (flash flooding) Accumulating (pollution) Erosive (soil and nutrient loss and siltation) Mismanagement of a valuable resource There is a cycle of interconnected parts.

Augmentation of Landscapes Permeable Surfaces Drain Pipes to the Street Compaction of Soil Replacement of Native Vegetation

Effects of Draining a Landscape Groundwater Depletion Arterial Convergence Downstream Expensive Centralized Systems Development Erosion and Soil/Nutrient Loss and Siltation Increased Drought Proneness on Landscape

Desertification- a Positive Feedback Drain the landscape Plants Roots and Microorganisms Die off (humus) Soil Structure declines (Soil loss and compaction) Drainage Increases Groundwater Depletion and Decrease in Rainfall

Drought and its Effects Falling Reservoir Levels Demand on top of Scarcity (irrigation) Increased Pollutant Concentration Increased Chemical Treatment of Water Peak Delivery Issues and New Development Plant Stress Increased Water Needs Loss in bio-productivity on landscape

Patterns High and Dry (episodic change vs. rhythmic stability) Water is most damaging when allowed to channelize Absorption of water is a big limiting factor

Swales Definition: Water harvesting ditch on contour. Functions: To slow down, catch, and store precipitation and runoff in the soil. Recharge Groundwater Mitigate Flooding and Erosion Increase Bio-productivity Reduce Irrigation Demand Medium for Plants and Bio-Filtration