Many California counties use the 100-year storm as the design storm for regional flood control facilities and stormwater related capital improvements. However new data show that storm will be more intense than previously thought.
Perhaps inspiring Murphy’s later pronouncement, mathematician Augustus De Morgan said, “Whatever can happen, will happen if we make trials enough.” At some point, your flood infrastructure will be tested by a storm event equal to or larger than the event it was designed to withstand.
California’s 4-year drought may have further exacerbated rain- and drainage-related issues such as shrinking wood structures creating leak points; vegetation, debris, or sediment build-up that impedes drainage; and unnoticeable changes in upstream drainage patterns that may have downstream impacts. To protect property and structures from costly erosion and water damage anticipated due to El Niño’s…
The potentially strong El Niño and exceptional rain this winter requires project owners pay special attention to Construction General Permit (CGP) and Stormwater Pollution Prevention Plan (SWPPP) regulations to ensure construction site compliance and avoid project delays and violations.
Combining the drought and evidence of a “Godzilla” El Niño event likely this winter, stormwater is increasingly valued as an asset worth integrating into California’s overall water management strategy. Re-thinking how to leverage stormwater resources opens up opportunities for repurposing infrastructure designed and built to dispose of flood waters.
Students in the Encinitas Union School District (EUSD) are developing and writing campus Stormwater Pollution Prevention Plans (SWPPPs) as part of a year-long program.