Yard Drainage Problems: Find the Likely Cause and Your Options

Roof runoff, grading or a blocked route, poor infiltration, groundwater and flow from higher ground can coexist. This questionnaire suggests likely causes to investigate, not a diagnosis. Iowa State Extension’s Testing and Improving Soil Drainage (undated; read 2026-10-02) screens root-zone drainage: after pre-wetting and refilling, multiply the 15-minute drop in inches by 4. Less than 1 in/hr is poorly drained by that informal check, not a dry-well design test or proof of groundwater depth.

Report gutter behavior, low spots, surface routes and soil observations already known. Fix roof runoff and grading first for water at the foundation (Fairfax Soils and Drainage and EPA Disconnect / Redirect Downspouts, both undated; read 2026-10-02). Seasonal saturation or seepage calls for assessment before infiltration work (Oklahoma State Extension, September 2020). Wetness in dry weather near a septic system or well stops drainage advice for a septic or plumbing investigation. Water entering the house needs an on-site assessment.

These are separate public agency planning estimates, never a repair total: DNREC I-ADAPT Grade Lawn Away From Structure (2022 dollars) lists regrade plus replant at $850–$6,600 per residential lawn project. DNREC I-ADAPT French Drain for Yard (2022 dollars) gives simple DIY materials at $600–$2,000 per 60 linear ft and deep/complex installation at $1,000–$4,000 per 60 linear ft. DNREC I-ADAPT Rain Garden (2022 dollars) gives separate scopes per 150 sq ft: $150–$750 DIY, $750–$2,250 complex drainage-system and $2,250–$3,000 professional installation. Virginia Cooperative Extension (updated June 2024) gives $5 to more than $20 per sq ft of agreed rain-garden area. These are not a 2026 quote; no year adjustment or area scaling of the fixed DNREC scopes is used.

A French drain needs a working lower outlet (DNREC I-ADAPT, 2022); none reported means no French drain price card. A dry well is not an automatic cure for tight soil (Iowa State Extension, undated). The Pennsylvania dry-well fact sheet hosted by Malvern gives $4–$9 per cubic ft of designed storage in 2003 dollars, historical. EPA’s Millburn NJ report (October 2012 / March 2013, table 2-1; cost-observation year unspecified) gives one $4,080 example for a 6-ft diameter × 6-ft deep well, not a national figure and not scaled. Groundwater observations hide dry-well and rain-garden cards. Get site suitability checked and get a local quote.

DNREC I-ADAPT Extend Downspouts gives $14–$55 per elbow-plus-extension set, hardware only, in 2022 dollars. Three sets give $42–$165, a public agency planning estimate, not a 2026 quote. Redirect downhill to a suitable vegetated area, never onto a neighbor (EPA Disconnect / Redirect Downspouts, undated; read 2026-10-02). Homeowners can do simple accessible work; a gutter pro or landscaper handles other work.

Enter only an agreed garden area; this tool never computes area from a roof. DNREC I-ADAPT (2022) suggests about 20% of the draining hard surface; Virginia Cooperative Extension (updated June 2024) gives 5%. They differ, so get local design rules. Wisconsin DNR’s 2018 manual says at least 10 ft from the house and 1 ft above bedrock or high groundwater, away from a spot that already ponds. A dry well or rain garden is not guaranteed to fix a yard that stays saturated. Yes. Find causes, copy and print without an account. Web and MCP share 20 free calls per IP per UTC day and a global ceiling of 2,000 calls per UTC day. No separate tool cap. The engine uses pure rules and Decimal money with no network or model. Local stormwater and permit rules apply; get utilities marked before any digging. Electrical work needs a licensed electrician and usually a permit.