🔍 Key Concepts

• AHP (Above Head of Passes) river mile system on the Lower Mississippi River • Location and purpose of the Rosedale, MS gage on the Mississippi River • How gage locations correspond to specific river miles in published river charts or the River Atlas

💭 Think About

• Think about where Rosedale, Mississippi lies in relation to better-known reference points on the Lower Mississippi (such as Greenville, Vicksburg, or Memphis) and their river miles AHP. • Consider whether Rosedale is upriver or downriver from these reference cities, and by roughly how many miles. • If you have seen Corps of Engineers river charts, recall the approximate mile point for Rosedale gage listed in the stage/flood tables.

✅ Before You Answer

• Verify the definition of AHP (Above Head of Passes) and confirm you’re thinking of the Lower Mississippi River mileage, not statute or nautical miles from another datum. • Check a current Mississippi River gage list or river chart (USACE or similar) to see at which river mile the Rosedale gage is labeled. • Confirm that the mile point you select makes sense relative to nearby well-known gages (for example, that Rosedale falls between the mile points of cities you know it lies between).