Utility mapping is the process of locating, identifying, and mapping underground utilities such as water and sewage pipes, electrical and communications cables, gas lines, and other infrastructure. The goal of utility mapping is to create an accurate and up-to-date record of the location and type of utilities in a given area, and to provide this information to contractors, engineers, and other professionals who need to work on or near these utilities.

Utility mapping is typically done using a combination of ground-penetrating radar (GPR), electromagnetic location equipment, and other specialized tools and technologies. This information is then compiled into a detailed map that shows the location and type of each utility, as well as its depth and any other relevant information.

Utility mapping is important for several reasons, including:

1. Safety: Utility mapping helps to prevent damage to underground utilities during construction, excavation, or other projects.
2. Cost savings: By accurately identifying the location of utilities before a project begins, utility mapping can help to minimize the costs associated with utility relocation and damage to underground infrastructure.
3. Improved planning: With an accurate and up-to-date record of the location and type of utilities in a given area, utility mapping can help to inform project planning and design, ensuring that projects are developed in a way that minimizes the impact on existing utilities.
4. Regulatory compliance: In some cases, utility mapping may be required by local, state, or federal regulations to ensure that projects are developed in a safe and responsible manner.
   Overall, utility mapping is a critical aspect of many construction, engineering, and infrastructure projects, providing valuable information to help ensure the safe and efficient development of these projects.