ABOUT LAND & WATERSHEDS

Huge Impact. Invisible Footprint.

Water Resources Engineering & Site Improvement

Hydrologic & Hydraulic Analysis

Rigorous H&H modeling from TR-55 and TR-20 to HEC-HMS and HEC-RAS, applied to real drainage challenges across Puerto Rico and the Virgin Islands.

Drainage & Stormwater Design

Custom drainage systems designed to protect your property and meet requirements. From roadside ditches to full site stormwater management plans.

Site Improvement Design

Grading, drainage, and stormwater plans for new construction and redevelopment, designed to protect your investment and satisfy regulators.

A solo practice with senior-level expertise

DJ Vagnetti

Licensed Professional Engineer. Solo consultant. Every project gets the principal's full attention. From residential drainage to municipal storm sewer design and top-notch H&H modeling.

One site at a time. One watershed at a time.

Land & Watersheds serves residential property owners, developers, municipalities, and legal teams across Puerto Rico and the Virgin Islands. Whether you need a drainage study, a permit-ready H&H report, or an expert witness, we leave no stone unturned.

Post-Hurricane Recovery

Experienced in post-disaster infrastructure assessment and recovery engineering, helping communities and property owners rebuild resilient, flood-aware systems after major storm events.

Expert Witness Services

Clear, defensible technical opinions on flooding, drainage disputes, and water damage causation, presented for attorneys, insurers, and courts with the rigor your case demands.

Huge Impact.Invisible Footprint.

One watershed at a time.

Every drainage challenge has a solution

Serving Puerto Rico & the USVI

From karst sinkholes in the northwest to coastal floodplains in the east, Land & Watersheds brings rigorous engineering to the Caribbean's most complex hydrologic environments.