🔍 Key Concepts

• Standard vs. secondary tide stations and how Newburgh relates to its reference station in the Tide Tables • How to apply time differences and height ratios from the Tide Tables for a secondary station • How to interpolate between high and low water to get the predicted height at an in‑between time

💭 Think About

• First, identify the reference (standard) station used for Newburgh, NY and write down the high and low water times and heights for 6 July 1983 at that station. • Next, apply the listed time and height differences for Newburgh to those values to get the high and low water times and heights at Newburgh. • Then, determine where 1520 DST falls between the surrounding high and low waters at Newburgh and use proportional (or table) interpolation to estimate the tide height at that exact time.

✅ Before You Answer

• Confirm you have converted times correctly to DST vs. standard time and applied the correct zone description (ZD +4). • Verify you are using the correct date and tidal cycle (the correct pair of high/low waters that bracket 1520, not the wrong pair). • Double‑check your interpolation math: the fraction of time between HW and LW should be applied consistently to the change in height between HW and LW.