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Flood waters slowly inundate Moncton, beginning in the spring of 1915.

HistoryLink.org Essay 2436 : Printer-Friendly Format

Beginning in May 1915, the community of Moncton, located along the northern shore of Rattlesnake Lake, experiences one of the slowest floods in King County history. Throughout the summer, the lake is fed by seepage from an upstream dam, causing it to slowly rise. By the end of the year, Rattlesnake Lake has inundated the town, which is later condemned.

Not There Long

In 1906, the Chicago, Milwaukee & St. Paul Railway was built through the Cedar River watershed to provide access for the water department workers and their families who lived in nearby Cedar Falls. In a short time, a new community was built on the rail line a half mile north of the generating station at Cedar Falls. Located along the shores of Rattlesnake Lake, the new village was named for one of its settlers, a Mr. Moncton.

Whereas the Seattle Water Department owned worker homes in Cedar Falls, private individuals owned most of the houses at Moncton. The idyllic setting along the lake was ideal for many water, logging, and rail workers who wanted to own their own property. By 1912, Moncton “absorbed” the name Cedar Falls, due in part to urging from Seattle Water Department Assistant Engineer, J. D. Ross, but many who lived there continued to call it Moncton.

By 1915, more than 200 people lived in Moncton, and the fledgling community had a hotel, a barbershop, a saloon, a restaurant, a few stores, and even an indoor swimming pool. A school on the north end of town provided education for children up through 8th grade. Older students had to walk or ride a horse seven miles to the nearest high school in North Bend.

Springs in the Springtime

In 1914, the City of Seattle began building a masonry dam on the Cedar River between Cedar Lake and Rattlesnake Lake. The dam was needed to impound water to generate electric power for City Light. By the spring of 1915, the masonry pool was filling up, which unfortunately caused seepage through the vast glacial moraine underneath.

Throughout the clear-cut hillsides that rainy season, nearby residents saw springs burst forth out of the ground, not a good sign. The moraine, filled like a sponge, was squirting out water wherever it could. As more water filled the pool, and more rain fell from the skies, more pressure caused more mini-geysers to erupt in the hills above Moncton. The excess water in the moraine had nowhere to flow but into Rattlesnake Lake.

Slowly the lake began to rise. First, the water edged up to the homes nearest the shoreline. A few days later, the streets muddied, and after that, standing water filled the lower section of town. At first, residents may have hoped that the slow-motion flood would somehow be diverted elsewhere, but it soon became apparent that their community would be underwater by summer’s end.

The Creeping Flood

During the month of May, the water rose a little over a foot per day. Rowboats and a barge were floated in so furnishings and personal items could be removed. After that the levels kept increasing to the point where houses popped off their foundations, causing them to float like corks into the middle of the lake.

Moncton residents kept a stiff upper lip and hoped for the best. Although many were now homeless, those who worked for the water department or the railroad were sheltered in tents while new homes were built for them. Others were out of luck.

The school, located on higher ground, was still in use, but a storm ripped its roof off, and classes were moved to a church on the south end of the lake. By the time Rattlesnake Lake stopped rising, the buildings on the south end were the only ones spared.

Moncton, We Hardly Knew Ye

Worried that the wreckage-strewn lake would next seep into the watershed, the City of Seattle condemned the town of Moncton. A total of $47,658.03 was paid to residents for their land. The next year, water levels receded enough for Seattle City Light to finish off the town.

A crew of workers was sent in to tear down the waterlogged homes. A few were salvageable and were bought by nearby residents and moved to higher ground. The rest were torn apart, soaked in kerosene and lit afire. What water couldn’t destroy, flames quickly erased. For a long time afterwards, Cedar Falls residents were not allowed to swim in the lake for fear of further contamination of the water supply.

Years later it was discovered that the moraine had filtered out impurities. The lake was once again opened to the public. In 1970, Rattlesnake Lake Park was created, and the lake is now used for boating, fishing, and swimming.

Today (2000), little trace of Moncton remains, except for the adventurous. Those with scuba gear can probe the murky depths of Rattlesnake Lake and still find the foundations of this short-lived town.

Sources:
BOAS, Inc., “Morse Pump Plant Cutural Resources Mitigation: Rattlesnake Lake and Boxley Creek,” City of Seattle Water Department document No. 9214 1994, pp. 23-28; Additional information provided by Seattle Public Utilities.


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This essay made possible by:
Rivers-in-Time Project:
King County
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Train depot at Moncton, 1900s
Postcard


Hotel and restaurant in Moncton owned by Lucky Jordan, flooded in 1915
Courtesy Seattle Public Utilities


Moncton flood, 1915
Courtesy Seattle Public Utilities


Makeshift grocery store on high ground north of depot at Moncton, ca. 1915
Courtesy Seattle Public Utilities


Powerhouse foundation at Moncton railroad camp, 1993
Courtesy Seattle Public Utilities


Rattlesnake Lake, March 2000
Courtesy History Ink


Flood at Rattlesnake Lake, June 28, 1915
Courtesy Seattle Municipal Archives


Flood at Rattlesnake Lake, June 28, 1915
Courtesy Seattle Municipal Archives


Flood at Rattlesnake Lake, June 28, 1915
Courtesy Seattle Municipal Archives


 
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