Heritage Inventory History of Site: Probable construction date 1891. Donnelly's Weir and picnic ground has rich documentation for visitation during 1910-1920s. Possibly one of the first weirs in the Maroondah system.
Heritage Inventory Significance: High regional historic and scientific significance.
Informants: Healesville and District Historical SocietyAlma Mitchell, PresidentS. Symons - Healesville local historical/nRecorded by: Andrea Murphy Date Recorded:? Heritage Inventory Site Features: Site includes entire area of weir and surrounding picnic grounds. Although gazebo is recent, the weir and exotic plantings date back to 1890s./nHeritage Inventory Key Components: Cement wall with small wier stonework all around dam upstream of weir and for a short distance downstream. Weir is surrounded by exotic plants contemporaneous with weir construction.