At 0850, 4 January, you pass the Gage at...

Question 1 of 2707066636eea28f7522a1c51a96a

At 0850, 4 January, you pass the Gage at Natchez, MS which reads 26.8 feet. The low water reference plane (LWRP) for Natchez is 6.1 feet. What is the water level in relation to the low water reference plane?

Back

Question 1 of 27070

🔍 Key Concepts

• How river gage height relates to the low water reference plane (LWRP) • Whether you should add or subtract the LWRP value from the gage reading • Interpreting "above" or "below" the reference plane based on your calculation

💭 Think About

• If the gage reads 26.8 ft and the LWRP is 6.1 ft, what does the gage actually measure from, and how do you relate that to the reference plane? • Set up a simple equation: Water level relative to LWRP = ? (using the gage reading and the LWRP value). Should you be adding or subtracting? Why? • Once you get a number, ask: Is the water surface physically higher or lower than the low water reference plane?

✅ Before You Answer

• Be clear on what "low water reference plane" represents (a fixed vertical datum) • Confirm whether a larger gage reading means higher or lower water relative to that datum • After calculating the magnitude, double-check the sign (above vs. below) before choosing between similar numeric options