Axle assembly having a lubricant reservoir

An axle assembly having an axle housing that includes arm portion (34) for receiving an axle (24). A dam (28) may be disposed in the arm portion (34) and may cooperate with the arm portion to define a reservoir (100) that is configured to retain a volume of a lubricant (44). A conduit (26) may deliver lubricant to the reservoir. The disclosure describes several embodiments of dams.