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At CS Engineering, we provide accurate and compliant drainage studies and hydrologic reports for residential, commercial, and agricultural developments across Southeast Arizona. From stormwater management and erosion control to floodplain analysis, our reports are designed to meet county and FEMA requirements while protecting your property and surrounding land. With over 14 years of local experience, we help clients plan responsibly, prevent costly issues, and move through approval processes efficiently.

Whether you’re preparing for new construction or need documentation for a permit or land sale, our drainage expertise ensures your site meets all hydrologic, hydraulic, and regulatory standards.
Stormwater Management & Runoff Control
Erosion and Sediment Analysis
Floodplain and FEMA Compliance
Hydrologic & Hydraulic Calculations
Drainage Report Preparation for County Submittals
We deliver detailed, engineer sealed reports backed by accurate modeling and field evaluation—ensuring your project remains compliant, sustainable, and ready for approval.

Every study begins with a detailed evaluation of your site’s topography, watershed characteristics, and design objectives. Our process is data-driven, compliant with county requirements, and focused on long-term water management success.

We assess site conditions, existing drainage patterns, and relevant floodplain data using on-site inspections and GIS mapping.
We model rainfall, runoff, and flow paths to evaluate drainage performance and potential flood risks.ding and utility layouts, identifying any potential design or drainage challenges early on.
Our engineers compile detailed findings, calculations, and recommendations into a county-ready report.
We communicate directly with local officials and stakeholders to ensure smooth review and approval.
You receive a complete, sealed drainage report ready for submission, permitting, and project development.