Nouns ending in -ée are usually feminine.
The suffix often marks a duration or contents.
Is portée masculine or feminine?
laportée
The rule behind it
91.7% of -ée nouns are feminine
In context
Cette arme a une portée de 300 mètres.
This gun has a range of 300 meters.
Gardez le médicament hors de portée des enfants.
Keep the medicine away from children.
La guerre en Europe fut portée en Afrique.
The war in Europe was carried into Africa.