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CPRA’s CRMS team reports sea‑level acceleration since 2011, coastal inundation increases and new coastal change synthesis
Summary
Leanne Sharp, CRMS program lead at CPRA, reported on a 390‑site monitoring network that recorded a coast‑wide rise in relative water levels beginning around 2011 and substantial basin‑specific responses, including freshening in Calcasieu‑Sabine and increased inundation across many marsh types.
Leanne Sharp, CPRA’s Coastwide Reference Monitoring System (CRMS) lead, gave the board a program update describing network scope, recent findings and next steps for data collection.
CRMS is a long‑running monitoring network CPRA implements with the U.S. Geological Survey and contractors. Sharp said CRMS comprises roughly 390 randomly distributed sites across coastal Louisiana; each site collects a consistent set of measurements used to infer marsh and basin‑scale changes. “It was initially funded by the CWPPRA program to support monitoring of their projects,” Sharp said, noting the network is now used widely by state and federal planners, academics and consultants.
Sharp summarized major signals from the CRMS time series. The network recorded an inflection in regional relative…
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