Kenmore, King County
KENMORE DRAINAGE &
EROSION CONTROL CONTRACTORS
Kenmore receives 41 inches of rain annually and sits on soil that creates persistent drainage challenges for homeowners. Kenmore is uniquely located at the mouth of the Sammamish River and the northernmost shore of Lake Washington, making it the convergence point for several large drainage basins. New Life Drainage designs custom systems that keep Kenmore properties dry and protected year-round.
50+
Years Serving Kenmore
500+
Projects Completed
5.0
Google Rating
100%
Licensed & Insured
Why Kenmore Properties Need Professional Drainage
The soil in Kenmore is primarily Vashon Glacial Till, which consists of nearly impermeable mixtures of silt, sand, gravel, and clay. This dense, well-drained but shallow soil often results in poor natural drainage and shallow tree roots. Some areas also feature excessively permeable glacial outwash deposits.
Kenmore features a varied terrain with a peak elevation of about 338 feet, situated at the northern tip of Lake Washington. The topography includes hills, slopes, and ravines that direct surface water downhill towards Lake Washington and the Sammamish River.
Kenmore is susceptible to flooding due to its location at the downstream end of several large drainage basins, with notable events including historic flooding in December 2025 that led to evacuations in low-lying areas. The Sammamish River and local creeks frequently experience both urban and river flooding after heavy rain. The City of Kenmore requires approval from the city manager for any work related to permanent or temporary storm drainage control. Erosion and sediment control measures must be constructed prior to any grading or land clearing and maintained until all improvements are completed.
Kenmore is uniquely located at the mouth of the Sammamish River and the northernmost shore of Lake Washington, making it the convergence point for several large drainage basins. The city's natural drainage is heavily influenced by gravity-fed streams and tributaries that flow south in Northern Kenmore and north/northwest in Southern Kenmore.
Why Kenmore Homeowners Choose New Life Drainage
What Makes Kenmore Drainage Installation Different
Local Soil Conditions
The soil in Kenmore is primarily Vashon Glacial Till, which consists of nearly impermeable mixtures of silt, sand, gravel, and clay.
Terrain & Waterways
Kenmore features a varied terrain with a peak elevation of about 338 feet, situated at the northern tip of Lake Washington.
41 inches Annual Rainfall
Heavy Pacific Northwest rainfall on local soil creates months of saturation from October through May without proper drainage systems.
Drainage Services in Kenmore
French Drain Installation
Professional French drain systems designed for Kenmore's specific soil and terrain conditions.
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Yard Drainage Systems
Custom catch basins, surface drains, and grading solutions for Kenmore yards with standing water.
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Erosion Control & Slopes
Slope stabilization, drainage channels, and runoff management for Kenmore's hillside properties.
Learn MoreHow Much Does Drainage Cost in Kenmore?
All prices include site preparation, materials, and cleanup. Free, no-obligation estimates with all the details — no surprises.
French Drain
$3,000–$8,000
Per system, soil-dependent
Catch Basin System
$2,500–$5,000
Surface water collection
Full Yard Drainage
$5,500–$14,000
Complete system design
Erosion Control
$4,000–$12,000
Slope stabilization
Prices are based on site conditions, linear footage, and system design. Get a free estimate for exact pricing.
"New Life Drainage solved our yard flooding problem in Kenmore. Professional crew, great communication, and the system works perfectly through every storm. Highly recommend."
Satisfied Customer
Kenmore, WA
Kenmore Areas We Serve
Central Kenmore
Drainage challenges from local soil and terrain conditions requiring professional assessment and custom solutions.
Sammamish River area
Drainage challenges from local soil and terrain conditions requiring professional assessment and custom solutions.
Log Boom Park area
Drainage challenges from local soil and terrain conditions requiring professional assessment and custom solutions.
Kenmore Drainage FAQs
How much does drainage cost in Kenmore?
Residential drainage projects in Kenmore typically range from $3,000 to $14,000 depending on the system type, property size, and soil conditions. We provide free on-site estimates with transparent, detailed pricing — no surprises.
Why does my Kenmore yard stay soggy all winter?
The soil in Kenmore is primarily Vashon Glacial Till, which consists of nearly impermeable mixtures of silt, sand, gravel, and clay. Combined with 41 inches of annual rainfall mostly falling between October and May, yards without proper drainage systems become saturated for months. A French drain or catch basin system can remove this trapped water.
Does Kenmore require permits for drainage work?
Most residential drainage installations in Kenmore do not require a permit unless they connect to the public storm system or involve significant grading near critical areas. Our team advises on local requirements during the free estimate process.
What drainage system is best for Kenmore soil?
The best system depends on your specific property conditions. Kenmore's soil varies by location, so we conduct a thorough site assessment during our free estimate visit to determine whether French drains, catch basins, regrading, or a combination will work best for your property.
Fix Your Kenmore Drainage Problem
Get a free on-site assessment from drainage experts who understand Kenmore's local soil, terrain, and rainfall challenges.