The Texas Coastal Bend has been home to over 12 tide gauges from Port Mansfield to the south to Copano Bay to the North, a large number of measuring stations for a coastline less than 200 miles long. Two of the tide gauges are part of the NWLON while most of the other stations are part of the Texas Coastal Ocean Observation Network (TCOON). Except for the NWLON tide gauges, the time series of the gauges are still shorter than the 30 years typically necessary to estimate rslr with sufficient precision. At time scales shorter than 30 years the influence of interannual and decadal variability of the water level signal can become too large. However, because of their relative proximity, the Coastal Bend tide gauges experience similar weather and ocean forcings. This allows to correlate and remove these contributions from these long-term water level time series. The resulting confidence intervals are narrower allowing to better compare nearby locations. rslr trends are estimated for each of the Coastal Bend locations. Rates range from 2.8 mm/yr to 7.2 mm/yr when computed over the 1993-2015 time span. Relative confidence intervals are estimated for these trends and rlsr differences are discussed in the context of their local coastal geological setting. The significance of a 4 mm/yr rslr difference is discussed in terms of changes in inundation frequency particularly inundations related to relatively small surges often labeled as nuisance flooding.
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