Clapsaddle-Garber Associates, Inc. (CGA) is a civil engineering and land surveying firm based in Ackley, Cedar Falls, Des Moines, and Marshalltown, Iowa. We have provided a full range of quality engineering and land surveying services throughout Central Iowa since 1959. Our team includes Professional Engineers, Licensed Land Surveyors, and a Real Estate Broker. Our areas of expertise include aviation facilities; construction administration for public and private clients; residential, commercial, and industrial subdivisions; public, commercial, and private site designs; land surveying and construction staking; right of way acquisition; stormwater studies and management plans; construction testing and observation for public and private clients; studies, planning, and design of traffic, transportation, and recreation facilities; planning and design of water distribution systems; and planning and design of wastewater collection systems. Your RESPONSIVE Engineers, Land Surveyors, and Landscape Architects!