Alisha Chan

Previous studies have indicated that green space, including green infrastructure (GI) and many other sustainable stormwater control measures (SCMs), are beneficial in areas of racial diversity, economic hardship, and lower educational standing by improving perceived health, enhancing urban aesthetics, and creating jobs. Additionally, SCMs can treat and decrease the peak flowrate of stormwater runoff, reducing the likelihood and severity of floods and house mold that vulnerable communities with low income, a high percentage of minorities, and/or low educational standing often face. However, studies have shown that general urban green space and tree canopy are more abundant in areas with higher median household income, less racial diversity, and higher educational attainment. In my study, the associations between density of SCMs and socio-demographics are found in Washington DC, Portland, Oregon, and Roanoke County, VA. The assessment uses U.S. Census Block Groups. The socio-demographic factors studied were population density, percentage of African Americans, percentage with a bachelor’s degree, and median household income. Results indicate that Portland has a higher density of SCMs in higher socio-demographically vulnerable communities. However, Portland is showing a downward trend of recently implementing less SCMs in higher socio-demographically vulnerable communities while DC has an upward trend of recently implementing more SCMs in higher vulnerable communities.

 

Results indicate that the presence of locality-wide SCM installment programs may impact the types, density, and locations of SCMs. Results from this study provide a fuller understanding of where SCMs have been placed in relation to socio-demographic distribution. This information can be used to inform guidelines for successful implementation of SCMs that considers equal distribution among socio-demographic groups.

Work Product: Presentation