sentences:  In addition to the former body, another provincial political authority was the civil governor discretionarily designated by the central government.A modest change to the 1833 provincial boundaries that concerned Madrid took place in 1850, when the small municipality of Valdeavero (19 km2), until then part of the province of Guadalajara, joined the province of Madrid.One of the limits so far for the growth of the capital, water supply, experienced a substantial change in 1858 following the arrival to the city of Madrid of water from the Lozoya River with the inauguration of the bringing of the Canal de Isabel II.