HYDROGRAPHY Open Water Open/Inland Water Lakes Label as required. Perennial When too numerous to show  individual lakes, show  representative pattern and  descriptive note. Number  indicates elevation. Non-Perennial (dry, intermittent, etc.) Illustration includes small perennial lake. Reservoirs Natural Shorelines Man-made Shorelines  Label when necessary for clarity Too small to show to scale Under Construction  Inland Water Shorelines Definite Fluctuating Unsurveyed  Indefinite Man-made FAA Chart Users’ Guide - VFR Symbology - Sectional and Terminal Area Charts 37