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Drainage Management Plan

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Drainage Management Plan

Parties and Project Identification

Effective Date:

Recitals

WHEREAS, Client owns or controls the property and drainage systems located at: (the "Project Site");

WHEREAS, Contractor is engaged in providing professional drainage assessment, design, construction oversight, and maintenance services, and represents that it has the competence, personnel, and licenses necessary to perform the services described in this Drainage Management Plan;

WHEREAS, the parties desire to set forth the scope, responsibilities, payment terms, and legal provisions governing Contractor's work on the Project Site as set forth below.

Scope of Work

Contractor shall perform the professional services, supply materials, and supervise construction activities necessary to manage, divert, control, and maintain stormwater and surface drainage at the Project Site in accordance with applicable laws and industry standards. The detailed scope shall include assessment, design of corrective measures, installation oversight, maintenance schedule, monitoring, and reporting as described below and in Contractor's technical attachments incorporated by reference.

Site Conditions and Proposed Measures

Construction, Maintenance, Monitoring, Reporting

Permits, Compliance, and Approvals

Contractor shall identify and assist Client in obtaining any permits or approvals required for the proposed drainage measures. Contractor will perform work in compliance with all applicable federal, state, and local laws, ordinances, rules, and regulations. Contractor shall notify Client in writing of any known permit conditions that materially affect project cost or schedule.

Payment Terms

Client shall pay Contractor for services performed under this Plan as follows:

Late payments shall accrue interest and fees as specified below.

Term and Termination

This Drainage Management Plan commences on Start Date: and shall continue until End Date: , unless earlier terminated as provided herein.

Either party may terminate this Agreement for convenience upon written notice to the other party given at least days prior to the effective date of termination. Termination for cause may be immediate if the non‑breaching party provides written notice describing the breach and the breach is not cured within 15 days of receipt of such notice.

Confidentiality

Each party shall hold in confidence and not disclose to third parties any non-public technical, financial, or business information disclosed by the other party and designated in writing as confidential, or which a reasonable person would consider confidential under the circumstances. Confidential information shall not include information that is publicly known through no fault of the receiving party or that is required to be disclosed by law; if disclosure is required, the receiving party shall provide prompt written notice to the disclosing party and shall limit disclosure to the extent possible.

Liability, Insurance and Indemnity

Contractor shall maintain professional liability and general liability insurance in amounts customary for similar services and shall provide certificates of insurance upon request. Contractor shall indemnify and hold harmless Client from claims arising out of Contractor's negligent performance of services, except to the extent caused by Client's negligence or willful misconduct. Client's sole recovery for Contractor's negligent performance shall be limited to direct damages and not include consequential damages, except as otherwise required by law.

Governing Law

This Plan and the performance of the parties hereunder shall be governed by and construed in accordance with the laws of the state of without regard to its conflict of laws principles.

Entire Agreement and Amendments

This Drainage Management Plan, including any attachments and schedules expressly incorporated herein, constitutes the entire agreement between the parties with respect to the subject matter and supersedes all prior agreements, proposals, representations, and understandings, whether written or oral. Any modification or amendment must be in writing and signed by authorized representatives of both parties.

Dispute Resolution

The parties shall attempt to resolve disputes arising under this Plan through good faith negotiation. If negotiation fails, disputes shall be resolved by binding arbitration administered in accordance with the arbitration rules mutually agreed by the parties, conducted in the county of , and judgment upon the award may be entered in any court having jurisdiction.

Certifications

Each party represents and warrants that it has the authority to enter into this Plan and that the individual signing on its behalf is duly authorized to bind the party to the terms and conditions set forth herein.

Client Printed Name:

By (Signature):

Date:

Contractor Printed Name:

By (Signature):

Date:

Enter text✕

What a Drainage Management Plan Is and Why it Matters

A Drainage Management Plan documents how stormwater and surface runoff will be managed on a site to protect property and receiving waters, reduce erosion, and meet local permitting standards. Typical plans describe existing and proposed drainage features, hydrologic calculations, design storm assumptions, conveyance and detention measures, erosion and sediment control practices, and a maintenance schedule. Authorities responsible for review include municipal engineering departments, county stormwater programs, and state environmental agencies. Clear plans reduce construction delays and provide a reference for long‑term maintenance and regulatory compliance.

Key Outcomes a Drainage Management Plan Delivers

A well-prepared Drainage Management Plan clarifies responsibilities, demonstrates compliance with local and state stormwater ordinances, reduces flood risk, and documents maintenance obligations for property owners and managers.

Key Outcomes a Drainage Management Plan Delivers

Who Typically Prepares and Reviews These Plans

The Drainage Management Plan is prepared by engineers or qualified consultants and reviewed by municipal or county permitting staff prior to construction or redevelopment.

  • Site developer or owner: commissions the plan, funds required improvements, and accepts maintenance obligations.
  • Civil or drainage engineer: produces hydrology, design details, and maintenance specifications for permits.
  • Municipal reviewer or inspector: checks compliance with local ordinances and issues approvals or corrections.

Clear assignment of roles in the plan avoids disputes and expedites permit approval and site acceptance.

Authorized Signers and Responsible Parties

Owner / Developer

The property owner or an authorized developer signs to accept maintenance obligations and any long-term access or easement agreements, and to confirm that site conditions and ownership information are accurate.

Licensed Engineer

A licensed civil or drainage engineer signs and stamps design calculations and drawings to certify professional responsibility and compliance with applicable technical standards and permitting requirements.

Essential Data Fields to Include

Project Name: Official project title
Site Address: Street, city, state, ZIP
Owner Contact: Name and phone
Design Storm: Storm ID and return period
Drainage Area: Acres or square feet
Maintenance Plan: Schedule and responsible party

Step‑by‑Step: Completing the Drainage Management Plan

Follow a logical sequence: collect site data, run hydrologic analyses, design conveyance and storage, document erosion controls, assign maintenance, and prepare final drawings and narratives for submission.

  • 01
    Collect Site Data: Survey topography, soils, and existing drains.
  • 02
    Hydrologic Analysis: Choose method and compute runoff rates.
  • 03
    Design Controls: Size swales, pipes, detention, and filtration.
  • 04
    Prepare Submission: Combine drawings, narrative, and signature pages.

How the Plan Moves Through Review and Approval

Understanding each routing step helps anticipate review times and required revisions before construction can begin.

  • Pre-Submission Meeting: Optional review to align plan with local standards.
  • Permit Submission: Submit drawings, calculations, and fees to authority.
  • Technical Review: Reviewer issues comments or approval conditions.
  • Final Approval: Permit issued and construction may start.

Core Sections of a Professional Drainage Management Plan

A complete plan is organized to let reviewers quickly verify design assumptions, conformity with standards, and long-term maintenance commitments.

Cover Sheet

Project identification, revision history, and permit application references with contact information for owner and engineer.

Site Plans

Scaled drawings showing contours, existing and proposed drainage features, inlets, pipes, outlets, and erosion control measures.

Hydrologic Calculations

Runoff analyses, rainfall data, and design storm selection with method notes and key assumptions.

Hydraulic Design

Pipe sizing, channel capacities, detention/infiltration sizing, and outlet control details.

Erosion and Sediment Control

Temporary and permanent measures for construction and post-construction phases.

Maintenance Program

Inspection schedule, responsible party, and procedures for sediment removal, repairs, and recordkeeping.

Common Preparation Pitfalls to Avoid

  • Omitting soil infiltration data leads to undersized infiltration systems and permit rejections.
  • Using incorrect design storm data causes capacity errors and noncompliance with local standards.
  • Failing to assign maintenance responsibilities creates enforcement issues after construction.
  • Submitting incomplete as‑built verification delays final acceptance and occupancy certificates.

Consequences of an Inadequate or Incorrect Plan

Permit Denial: Stop-work orders possible
Civil Fines: Local penalties may apply
Restoration Costs: Corrective works required
Liability Exposure: Property damage claims
Insurance Issues: Coverage disputes possible
Project Delays: Schedule and cost impact

Typical Timing and Review Expectations

Allow sufficient lead time: municipal plan review windows, required public notices, and seasonal constraints can affect project schedules.

Pre-application Review:

2–6 weeks typical for informal feedback

Formal Plan Review:

4–12 weeks depending on agency workload

Revisions and Resubmission:

Allow 2–4 additional weeks per review cycle

Construction Start:

May be delayed until erosion controls are approved

Final Inspection:

Scheduled after as‑built submission and correction of deficiencies

Digital Submission and eSigning Considerations

Many agencies and stakeholders accept electronic plans and signed records when they meet format, authentication, and record retention standards.

  • File Formats: PDF, DWG for drawings, and DOCX for narratives
  • Integrations: Common integrations include Microsoft 365, Google Workspace, and Procore
  • Authentication: Acceptable methods include email link, SMS code, or stronger KBA

Validate agency electronic filing rules and ensure eSignature and storage meet ESIGN and local recordkeeping requirements before submitting.

eSignature Provider Comparison for Signing Drainage Plans

Comparison of common vendor features and starting prices; signNow is placed first in the table per page conventions.

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Starting Price $8/user/mo $15/user/mo $14/user/mo $19/user/mo $15/user/mo
Free Trial 7-day free trial Varies Varies Varies Varies
Bulk Send Yes Yes Yes Yes No
Audit Trail Yes Yes Yes Yes Yes
HIPAA Compliant Yes Yes Yes No No

Frequently Asked Questions About Drainage Management Plans

Answers to common questions on preparation, signing, filing, and legal validity to help reduce common delays and compliance issues.


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