HomeWater ReportThe Big Slough Water Report – North Port Blvd. 6:00pm 9/30 The Big Slough Water Report – North Port Blvd. 6:00pm 9/30 adminSeptember 30, 2022September 30, 2022 The current Gage Height for The Big Slough at North Port Blvd. is 24.55 Ft.