Title: Cochituate Aqueduct
Content:  of the river is via an iron siphon tube, whose original control houses on both sides have been demolished. In Newton, the aqueduct is located in the median dividing the lanes of Waban Avenue, and passes near the Waban MBTA station, before snaking through residential parts of Waban to skirt the southern edge of Cold Spring Park. It proceeds northeasterly to skirt the northern edge of the Newton Centre Playground, where the Sudbury Aqueduct runs along the playground's south side. It then loops northward around Prospect Hill before turning southeast, passing through the Boston College campus, where its route has been obliterated by St. Thomas More Road. It skirts the west side of Chestnut Hill Reservoir (whose construction it predates), before heading mainly southeast, paralleling Reservoir Road, to the western end of the Brookline Reservoir, where its end gatehouse is located.
Title: Aqua Julia
Content:  conduits separated again (for no apparent reason), continuing on the surface and using, for about 9.6 km, the arches already built for the Aqua Marcia aqueduct, suitably restructured to support the conduits. The triple duct is still visible in the stretches of arches left standing, with the Aqua Tepula on top. They reached the city at ad spem veterem, near Porta Maggiore. From here the conduits used the Aurelian walls and crossed via Tiburtina on an arch which became Porta Tiburtina. The route then returned underground, passed the Viminal gate, where Termini Station stands today, and ended near the Porta Collina, where the main distribution castellum was, near the current via XX Settembre. It may have fed the nymphaeum called Lacus Orphei as shown on 
Title: Aqueduct of the Gier
Content:  a transition between open channel flow and a lead pipeline. From the castellum water was carried, now pressurized, in a set of airtight lead pipes laid side by side, with soldered joints, down the valley slope, across a bridge spanning the river—whose piers and arches are the most notable remains of the system—and up the facing slope, to a tank slightly lower than the head tank, losing just a little hydraulic head in the process. The inverted siphons obviated the bridging of deep valleys with arcade upon arcade of arches, as at Pont du Gard, which marks the limit of such a system.
Title: Kensico Reservoir
Content:  The water in the reservoir either provides NYC with water, or it travels down the spillway at the southernmost dam, and continues down the rest of the Bronx River, eventually flowing to the East River. The water that does supply New York City travels down either the Catskill Aqueduct or the Delaware Aqueduct. If it goes down the Delaware Aqueduct, it will pass through Yonkers, and flow through the Hillview Reservoir. It then continues through The Bronx, Manhattan, Brooklyn, and then stops at Staten Island. If it flows through the Catskill Aqueduct, It will stop at the Hillview Reservoir, and continue on through The Bronx, Queens, Brooklyn, and then stop at Staten Island.
Title: Los Angeles Aqueduct
Content:  Reservoir through the Haiwee Bypass passing around the South Haiwee Reservoir. The flow then continues 115 mi south through a series of pressure pipelines and concrete conduits where it connects up with the First Aqueduct at the North Portal of the Elizabeth Tunnel near the Fairmont Reservoir. The San Francisquito Tunnels (which includes the Elizabeth Tunnel) has a flow capacity of 1000 cuft/s and is large enough to handle the flow of both aqueducts. Once the combined flow reaches the penstocks above Power Plant #2, water is diverted into the Southern Section of the second aqueduct away through the Drinkwater Tunnel to the Drinkwater Reservoir. The last segment of pipe, known as the Saugus Pipeline, carries water south past Bouquet Canyon, 
Title: Aqua Virgo
Content:  length to its terminus in the centre of the Campus Martius. The route made a very wide arc starting from the east and entering the city from the north. It ran along via Collatina up to the Portonaccio area, passed via Nomentana to via Salaria, and then turned south and entered the city under the Horti Lucullani and crossed 1.2 km to the area of the Pincian Hill and current Villa Medici, where a spiral staircase (called the Pincio snail) leads to the underground conduit. The long detour was justified because the aqueduct had to serve the northern suburb of the city, until then without water supply, and because the low level 
Title: California Aqueduct
Content:  From its beginning until its first branch, the aqueduct passes through parts of Contra Costa, Alameda, San Joaquin, Stanislaus, Merced, Fresno, and Kings counties. The aqueduct then divides into three branches: the Coastal Branch in the Central Valley, and the East and West Branches after passing over the Tehachapi Mountains.
Title: Aqua Virgo
Content:  Pincio to Porta Pinciana, where it branches into 2 channels: ; one passes southwest to link up, but not mingle, with Acqua Vergine Antica just behind Piazza di Spagna and descends the Pincio to emit its water through the fine, elegant sprays of its regal mostra, the lions of Piazza del Popolo ; one passes northwest under Galoppatoio, curves through the Borghese Gardens, makes a sharp southerly turn toward Piazzale Flaminio to make its triumphant appearance in the triple-arch mostra cascading on the western slopes of the Pincio overlooking Piazza del Popolo. Two separate aqueducts emerge from the source for the Acqua Vergine unlike the Aqua Virgo:
Title: West Branch Reservoir
Content:  during May 1989. Water withdrawn from the West Branch ordinarily flows via the Delaware Aqueduct to the Kensico Reservoir in Westchester County for further settling. There it mixes with additional Catskill system water carried by the Catskill Aqueduct before entering tunnels that carry it to the Hillview Reservoir in Yonkers, at the City's northern boundary. There it enters the city's direct water supply distribution system, flowing via tunnels through the boroughs of The Bronx, Queens, and Brooklyn. The water finally stops at Staten Island. Water in excess of New York City's needs at the West Branch Reservoir goes over its spillway and into the West Branch Croton River, which is captured downstream by the Croton Falls Reservoir.
Title: Aqua Alexandrina
Content:  The Aqua Alexandrina received its water from the Pantano Borghese swamp near the city of Gabii, now a part of Monte Compatri. The same spring has supplied the Acqua Felice since 1586. The first 6.4 km of the total 22.4 km were tunnelled underground, later run on the surface and 2.4 km was carried on brick arches traversing the valleys of the Roman Campagna. Some of its last section inside the city remains uncertain but the aqueduct entered the city at Porta Maggiore and ended on the Campus Martius at the Thermae of Alexander, between the Pantheon and the Piazza Navona.

Question: where does cerebrospinal fluid flow to when it exits the cerebral aqueduct?
Answer: the fourth ventricle.
fourth ventricle.