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Convert to the modern vertical datum

Convert to the modern vertical datum. 2. HYDRO Validation periods. Chris Enright CWEMF DSM2 Workshop February 6, 2007. NAVD88. All model parameters that have an elevation attribute must be converted to NAVD88 Old datum effectively does not exist. GPS Bench Mark and

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Convert to the modern vertical datum

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  1. Convert to the modern vertical datum 2. HYDRO Validation periods Chris Enright CWEMF DSM2 Workshop February 6, 2007

  2. NAVD88 • All model parameters that have an elevation attribute must be converted to NAVD88 • Old datum effectively does not exist

  3. GPS Bench Mark and Tide Gage Locations in the Delta and Suisun Marsh All elevation data(stage, bathymetry, topography) depends on this geodetic benchmark network • realigned in 2002 to NAVD88 standard

  4. 2. HYDRO Validation Periods • ~ Spring-Neap time scale • Fair weather (30 in/hg) • Calm wind • Range of outflow/export conditions • overlap special study periods • Usually have salinity time series too.. • Suisun April-August 2004: 13 flow stations • North Delta 2006: 9? flow stations • Mildred Is/Franks Tract 2002 • confluence 1998: 7 flow stations • Etc.

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