Historic Resource Evaluation Project - Tuolumne Utilities District
Historic Resource Evaluation Project - Tuolumne Utilities District
Historic Resource Evaluation Project - Tuolumne Utilities District
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Phoenix Ditch (P-55-003751; CA-TUO-002765H)<br />
Description. This resource is a water conveyance system consisting of earthen berm<br />
ditch, creek (random), pipeline, and flume with a total length of 44,985 linear feet. It<br />
conveys water managed by the <strong>Tuolumne</strong> <strong>Utilities</strong> <strong>District</strong> from a diversion dam on<br />
Powerhouse Creek along Summers Lane downstream of PG&E’s Phoenix Powerhouse,<br />
ending at Curtis Creek between Camage Avenue and <strong>Tuolumne</strong> Road. There are 18,649<br />
feet of pipe, 153 feet of flume, 8,692 feet of creek, and 14,679 feet of open ditch. Sixtythree<br />
percent (63%) of the open ditch is lined with gunite. This operating water<br />
conveyance has been previously recorded, in part. The portion within Caltrans right-ofway<br />
was determined not eligible in 1991.<br />
This ditch has several geographically distinct segments, beginning with the upper<br />
segment from Powerhouse Creek to the Phoenix Bypass where the water is piped around<br />
the west side of Phoenix Lake, across the dam, and south along Meadowbrook Drive to a<br />
point where the Shaw’s Flat siphon starts. From that junction, water again flows in open<br />
ditch and a short flume to the Caltrans r/w on State Route 108. Then it is piped, with a<br />
short segment of open ditch, piped again, another short segment of open ditch, another<br />
pipe, and then open ditch to just north of the Sierra Pacific Industries (SPI) weigh station,<br />
where it is piped south through the log pond, then flows in an unnamed creek to its<br />
junction with Curtis Creek. Generally, the ditch flows from north to south along easterly<br />
facing slopes, switching to a westerly aspect south of Phoenix Lake. The Upper Phoenix<br />
has a rural ambience, as does the Lower Phoenix section north of State Route 108. From<br />
there south, the setting is urban or industrial. This ditch has two lengthy sections that are<br />
in good condition, but has diminished integrity due to recent piping and highway<br />
construction resulting in abandoned and obliterated segments.<br />
Fourteen features were noted, including the diversion dam on Powerhouse Creek; nine<br />
sections of dry-laid rock reinforcement; an isolated length of riveted, corrugated steel<br />
pipe; a length of riveted metal pipe reused as a culvert; a small crossing or bridge created<br />
by a rusted steel double culvert (side-by-side) in the ditch; and a riveted pipe. This latter<br />
artifact appears historically to convey water from a parallel ditch alignment uphill of the<br />
Phoenix. The parallel alignment is noticeable about 1,000 feet north from the southern<br />
ditch access point at the highway (possibly Street’s Ditch or Shawmut Ditch) and extends<br />
north to the Meadowbrook area, a distance of about one mile.<br />
History. The first segment of the <strong>Tuolumne</strong> Hydraulic Association (THA) ditch system<br />
took water from the North Fork <strong>Tuolumne</strong> River to the head of the north branch of<br />
Sullivan Creek, thence to Sonora and vicinity. A contract for construction was made<br />
during the latter part of 1852 with Engineer George Ketchum for a cost of $120,000<br />
(Carlo M. De Ferrari Archive No. 3183:2).<br />
In December of that year, the THA signed another contract with Ketchum to build a canal<br />
from Sullivan Creek to Campo Seco, York Town, Poverty Hill, and Montezuma Flats, to<br />
be completed in 60 working days from the 15th of December. The Company was to pay<br />
$6,000 in cash and furnish the plank lumber necessary, considered a further cash payment<br />
Foothill <strong>Resource</strong>s, Ltd. 4.30 TUD Ditch Sustainability <strong>Project</strong><br />
Francis Heritage, LLC<br />
<strong>Historic</strong> <strong>Resource</strong> <strong>Evaluation</strong> Report