Black River Canal Locks #7,#8,#9,#10,#11,#12,#13, especially #10 and #11

Lock #7 is under the Delta Dam and Locks #8-#12 are under the reservoir.

Lock #13: (Satellite)

Black River Overview

These locks were replaced by three locks on the east side of the Delta Dam.

JD Seymour posted seven photos with the comment: "The Black River House was located between locks 10 and 11 on the Black River Canal. The building sat just north of the bridge between the canal and road. Last fall Delta Lake was low enough to see this area, which has only happened a few times since 1912. After about a month the lake covered the area back up, for who knows how long. (there are still 2 more locks and an aqueduct further down under the water)"

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The Delta Dam was built between 1909-11. I was able to find a topo map that is old enough to show the original canal. Note that the dam is named after the town that the reservoir engulfed.

1904/04 Boonville Quad @ 62,500