Creek floodplain can affect work beyond the immediate water’s edge. Mapped areas follow Duck, Rowlett and Spring creeks and their tributaries, so proximity to a creek warrants checking the property’s floodplain status before settling on a construction footprint. The city’s floodplain guidance informs that check. New development in these areas is reviewed under the Flood Damage Prevention ordinance. For affected properties, plan for possible engineering review before committing to fence, concrete or drainage layouts.
Changes in soil moisture also matter below ground. Expansive black clay swells when wet and shrinks as it dries. That movement can heave shallow posts or leave supports uneven, changing how fence panels and gates line up. We apply the one-third depth rule to concrete footings to address shallow support placement. Drainage planning belongs alongside footing planning because water movement and the soil supporting the structure are connected.