Orchards is an unincorporated census-designated place in Clark County, sitting at 272 feet of elevation with a population of 27,729 at the 2020 Census — one of the largest communities in the county. That size reflects decades of heavy suburban development, and that development is precisely what shapes the drainage problem here. Orchards is not high enough to shed water quickly down a hillside, and not low enough to sit near a rising water table. The drainage problem in Orchards is a developed-lot problem: impervious surface has replaced the ground that used to absorb rainfall, and the water that used to soak in now has to go somewhere.
A lot that was once grass, garden, or soil can absorb a significant volume of rainfall before any water moves toward the foundation. Once that same lot gains a house roof, a concrete driveway, a patio slab, and a garden shed with a metal roof, every drop that falls on those surfaces immediately becomes runoff. Downspouts release that concentrated roof water at the foundation wall rather than at the drip line. Driveways pitch water toward the garage. Neighboring lots with similar coverage drain into low spots along shared property lines. Clark County clay soil — common throughout the Orchards area — absorbs water slowly under the best conditions and barely at all when already saturated from a wet October or November. The result is that water arrives at a foundation or crawl space faster than the soil can accept it, and it keeps arriving all winter.
Because Orchards is an unincorporated community, drainage and grading permits here go through Clark County rather than any city permit office. That matters for project planning: the applicable standards, the correct permit application, and the review timeline are all county processes, not city processes. Any project that involves significant grading, new impervious cover, or alteration of an existing drainage pattern will be evaluated under county rules, and knowing that at the planning stage is more useful than discovering it after a contractor has already begun. Vancouver Excavation Co. serves the entire county and is familiar with the Clark County permitting process for drainage work in Orchards.
The fix for developed-lot drainage in Orchards is about routing: capturing water where it concentrates and directing it to a legal outfall before it reaches a foundation, a crawl space, or a low-lying section of lawn. A French drain in this context is not necessarily a perimeter system encircling the entire structure. It is often a targeted interception installed at the specific point where concentrated runoff first arrives — at the base of a downspout run, across the low edge of a driveway, or along a shared property line where an adjacent lot drains onto yours. The trench collects the incoming water and carries it laterally to a downhill outlet or a designated discharge point, removing it from the area where it would otherwise accumulate.
Downspout extensions and surface swales sometimes handle simpler cases where the volume is manageable and a clear low point on the property exists to receive the water. Where the volume is larger or where multiple impervious surfaces drain to the same low area, a perforated pipe set in washed drain rock wrapped in filter fabric is the more durable solution — it intercepts both surface flow and the lateral seepage that moves through the upper soil layer during extended wet periods. Filter fabric around the rock bed prevents soil fines from migrating into the aggregate over time, which is the most common reason older DIY French drains stop working within a few years of installation.
The legal outfall is the most important design question on any Orchards drainage project. Water that is collected by a trench must exit somewhere, and that somewhere must be a point where discharge is permitted. A county ditch at the street edge, a storm drain connection with county approval, or a designated discharge easement are all viable outfalls; an adjacent neighbor's property without their written permission is not. We confirm the outfall option during the site visit, before the trench is designed, because a drainage system without a confirmed legal outlet only moves the problem to the end of the pipe rather than solving it.
Residential drainage work in Clark County runs from $1,500 to $6,500 for most single-family lots. A French drain system in the 100-to-150-foot range typically falls between $1,800 and $5,500 depending on trench depth, aggregate volume, pipe size, and the complexity of getting the outlet to a legal discharge point. On an Orchards developed-lot job, the variables that push toward the upper end of that range are usually outlet complexity — how far the captured water has to travel to reach a county ditch or approved discharge point — and the depth required to get the pipe below existing surface infrastructure like driveway aprons or utility crossings. Equipment and operator rates in this region run $110 to $190 per hour; spoil haul-off runs $60 to $120 per cubic yard depending on material type and haul distance.
Clay soil is the standard material across much of the Orchards area, and excavated clay is denser and heavier than dry sandy loam, which means haul-off costs can run higher than the raw cubic yardage would suggest. On a job where the entire trench spoil is saturated clay, the haul cost per cubic yard is closer to the top of the range than the middle. We note material type and estimated haul cost in the written estimate so neither figure is a surprise at the invoice.
We do not write a price for an Orchards drainage job without first walking the property and confirming the outfall route. The location of each impervious surface, the direction of existing drainage patterns, and the distance to a viable outfall are all things that only become clear on the ground. An estimate written without that information may miss the most expensive line item entirely — which is why we walk first and write the number after.
Other work we run near Orchards: the full list.
The dry working window across Clark County runs from mid-June through September, and that is the preferred installation season for Orchards drainage projects. During those months, clay soil is at its driest and firmest, trench walls hold their shape cleanly, backfill can be properly compacted, and the system can be tested before the rains return in October. Installing a French drain in dry conditions also allows the filter fabric and aggregate bed to be set without the disturbance that open- trench water creates — a trench that fills with water before the pipe is placed requires pumping and typically a second pass at compaction.
That said, most people in Orchards call about drainage because something is actively failing in the wet season, not because they planned ahead during August. Emergency drainage work in wet conditions is possible but costs more and produces less consistent compaction than work done in the dry window. When the immediate problem is a crawl space taking water or a foundation wall showing active seepage, a temporary solution — extending a downspout, redirecting a swale — may reduce the acute damage while a properly designed system is planned and scheduled for the following dry season. We can walk the property in any season and advise on what is urgent versus what can wait for better conditions.
Washington's utility locate law applies to every drainage installation regardless of season. Under RCW 19.122.030, the planned dig area must be marked in white before notifying 811, and excavation cannot begin until at least two full business days after the notice is submitted — with a maximum advance window of ten business days. In established Orchards neighborhoods where utilities were installed at various points over several decades, locate markings can reveal shallow gas lines, buried electrical service, and water mains that are not where general guidance would predict. We give notice on every project ourselves and do not start digging inside the waiting period.
We quote Orchards work in writing — how we price.
In heavily developed Orchards neighborhoods, impervious surfaces — roofs, driveways, patios, and sheds — concentrate rainfall that used to soak into the ground. Clark County clay soil absorbs slowly even at its best, and once it is saturated in October it absorbs almost nothing through May. The result is that concentrated runoff from hard surfaces accumulates faster than the soil can accept it, typically at the lowest point of the lot or against the foundation wall.
Orchards is an unincorporated census-designated place with no city government, so all grading and drainage permits go through Clark County, not any city office. Projects involving significant grading, new impervious surface, or changes to existing drainage patterns are most likely to require a permit. The correct first contact is Clark County Planning, and we help identify whether a permit is likely required during the initial site visit.
A French drain installed along a shared property line can intercept lateral water movement through the upper soil layer and route it to a legal outfall before it reaches your structure or collects in your yard. It does not stop surface flow that arrives as sheet flow above the soil line — that often requires a swale or berm in addition to the buried system. We assess both the surface and subsurface drainage patterns during the site visit to recommend the right combination.
The outlet needs to reach a point where discharge is legally permitted — typically a county roadside ditch, an approved storm drain connection, or a designated discharge easement. On an Orchards developed lot, that distance can range from 20 feet to well over 100 feet depending on property size and proximity to a public drainage feature. We confirm the viable outlet and measure the run before writing any price, because outlet distance is one of the primary cost variables.
Before any trenching, the dig area must be marked with white paint or flags and 811 must be notified — a minimum of two full business days must pass before work begins, with a maximum advance window of ten business days, as required by RCW 19.122.030. In established Orchards neighborhoods with utilities installed across multiple decades, locate markings sometimes reveal lines that require the trench route to be adjusted. We submit the locate notice on every project and build the waiting period into the schedule.
Walk us through what you see during a rainstorm — which surfaces shed water where, where it collects, and how close that collection point sits to the foundation or crawl space access — and we will come out, trace the drainage path, confirm a legal outfall route, and write a number before we leave. Developed-lot drainage in Orchards is a routing problem first, and the routing answer only comes from standing on the ground, not from a description over the phone.