GRAS Rainwater Retention (Initial) Findings

Students are working with Tyler Carson and Daniel Marasco (Ph.D students from Columbia Columbia University’s Department of Civil Engineering & Engineering Mechanics) to quantify water flow and retention on our green roof. We just installed the sensor and began logging data last week. Initial findings show that our green roof retained 82% of the 9mm of rainfall last Friday – a retention rate slightly higher than other roofs Tyler and Dan are monitoring around New York City!

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