Trinity River District

  
Posted July 16, 2009 in Gold Mining
Publication Info: Gold Districts of California Bulletin 193 California Division of Mines and Geology 1976 Table of Contents

The Trinity River, the southern part of the Klamath-Trinity River system, drains the southern part of the Klamath Mountain province. As this stream and its tributaries flow across auriferous rocks for much of their total lengths, they have been the sources of vast amounts of placer gold. The estimated output of the Trinity River placers is $35 million worth of gold. The Trinity River rises in the northeast corner of Trinity County in an area known as the Dodge district and flows in a general south-southwesterly direction for about 60 miles.

In the upper Trinity River area, the principal sources of gold have been the Carrville and Trinity Center districts. At Carrville the river was dredged until comparatively recently. Among several important lode-gold mines here, the most productive have been the Trinity Bonanza King with a total output valued at $ 1.2 5 million and the Headlight, which has yielded $500,000. The gold-quartz veins occur in slate and greenstone, but granitic bodies are nearby. Coffee Creek, an important tributary, enters the area from the west. This creek was placer-mined for many years, and several high-grade quartz mines near its headwaters produced gold.

Trinity Center was settled in 1851. Several older bench gravel deposits were extremely rich in the early days and bucket-line dredges were active recently. From Trinity Center south through the Minersville district, including part of the Stuart Fork, the region is covered by the Trinity Reservoir. The well-known Fairview lode mine was in the Minersville district.

The Trinity River and adjoining terraces were extensively mined in the Eastman Gulch and Lewiston districts. One of the better-known lode mines was the Venecia mine. The gold-quartz veins at this mine have yielded more than $500,000. In the Lewiston and Douglas City districts, the river makes a number of extremely sharp bends that have formed several wide river bars, particularly at Starvation Flat near the town of Lewiston and at Gold Bar. The Douglas City area was extremely rich in the early days where the highly productive Weaver, Indian, and Reading Creeks empty into the Trinity River.

Hydraulic mining of bench gravels, Trinity County

Downstream, in the Junction City district, the river swings to the north and then west. The river has been dredged for a distance of at least eight miles here. The bench gravels are extensive and thick, and some of the hydraulicked banks are several hundred feet high. The largest bench deposits are at Coopers Bar, Hocker Flat, Benjamin Flat, and Chapman Ranch. Canyon Creek and Oregon Gulch flow into the river at Junction City, and the North and East Forks, at Helena. Moderate amounts of older gravels exist at Big Bar to the northwest.


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