David R Wolf (DRW) Land Surveying provides expert value-based professional land surveying services. DRW is known throughout eastern Iowa, western Illinois, and northern Missouri for providing boundary and legal land surveying in addition to topographic and construction surveying for private, commercial, public, and industrial clients. ln 2021, DRW joined Shoemaker & Haaland and now has access to structural engineering, civil engineering, and scanning services.