9 Methods for Locating Utilities Before Digging

Start With a Complete Pre-Bore Review

Before setup begins, review the planned bore path and gather the available information about existing underground facilities. Utility records, project drawings, owner information, and site markings can help the crew build an initial picture of the subsurface environment. Treat that information as a starting point rather than a guarantee because records may be incomplete, outdated, or difficult to translate precisely into field conditions.

Walk the entire bore path before drilling. Look for utility boxes, meters, valves, manholes, pedestals, repaired pavement, and other surface features that may indicate buried infrastructure. Compare those observations with the markings and plans already available. When something does not line up, resolve the discrepancy before moving forward instead of assuming the marked route tells the whole story.

Confirm Utility Locations in the Field

Before work begins, confirm that required utility notification steps are complete for the project area. Give facility owners opportunity to mark their lines, and make sure the markings remain readable during drilling. If marks disappear or become questionable, request clarification before the bore advances.

A successful locate requires more than seeing paint on the ground. Crews need to understand where each known utility runs and how its position relates to the proposed bore. Follow applicable locating requirements and jobsite procedures, then verify critical crossings and areas where utilities run close to the planned path.

Pay close attention to depth. Horizontal position alone does not provide enough information for an HDD crew that must steer beneath or around existing infrastructure. Depth can change along a utility route, especially near service connections, previous repairs, or changes in grade. Build the bore plan around verified field conditions and maintain appropriate clearance based on project requirements.

When conditions call for physical verification, use an approved exposure method before drilling through a critical area. A visible utility gives the crew a much clearer reference than markings alone. The goal is to remove uncertainty where the bore approaches existing facilities.

Use Locating Equipment Correctly

The HDD locator plays a central role because the drill head travels underground where the operator cannot see it directly. The locating system helps the crew track position, depth, pitch, and direction during the pilot bore. Reliable information allows the operator to make controlled steering decisions while staying aligned with the planned path.

Check the locating system before the bore begins. Confirm that the equipment is operating properly and that the crew understands the setup for the jobsite. Interference can affect locating performance, so evaluate the area for conditions that may disrupt the signal. If readings become inconsistent, investigate the cause rather than continuing on an uncertain path.

Good locating also depends on communication between the locator and drill operator. Both people should understand the bore plan and any known utility crossings before drilling starts. During the bore, communicate changes clearly enough that the operator can react without guessing.

Maintain Control of the Pilot Bore

Utility strike prevention depends heavily on the quality of the pilot bore. The operator should follow the planned profile while making measured corrections based on reliable locating information. Aggressive steering or unnecessary changes can make the actual path harder to predict and may reduce available clearance near existing facilities.

Track progress throughout the bore instead of relying on assumptions from earlier readings. Conditions underground can change quickly, and the drill head may not respond exactly as expected in every soil. Regular tracking gives the crew opportunities to identify deviations early. Correcting a developing problem is usually easier before the drill reaches a congested crossing.

Do not let production pressure override uncertainty. If the crew loses confidence in the drill head location or the position of a nearby utility, stop and verify. A short interruption to confirm conditions is better than advancing without dependable information.

Protect the Entire Bore, Not Just the Entry

Crews sometimes focus heavily on the pilot bore, but utility awareness should continue through reaming and pullback. The final hole can become larger than the pilot path, which changes the space occupied by tooling and installed product. Clearance planning should account for the full operation rather than only the centerline traveled by the drill head.

Watch known crossing points during later stages of the bore. Keep the team aware of where the tooling sits in relation to exposed or marked facilities. If job conditions change after the pilot bore, reassess the plan before continuing.

Exit areas deserve the same attention as the entry side. Verify that the drill can emerge where intended without creating a conflict with buried infrastructure near the exit pit. Keep personnel positioned safely as tooling approaches the surface.

Keep Jobsite Communication Consistent

Clear communication helps prevent small uncertainties from turning into costly mistakes. Before drilling, make sure the crew understands the planned route, known utility locations, and any areas that require extra caution. Everyone involved should know when work must stop for verification.

Conditions can change during a shift. Markings may become difficult to see, equipment may move, or site activity may alter access to the bore path. Communicate those changes as they happen and update the crew’s understanding of the site. Never assume everyone noticed the same change.

Documentation can also support consistent decisions. Record useful bore information and note verified utility locations according to company procedures. Accurate job records help crews maintain awareness during the current bore and can provide useful context when work continues later.

Build Prevention Into Every HDD Operation

The best tips for preventing utility strikes during HDD operations become most effective when crews treat them as standard operating habits instead of extra precautions. Careful planning, field verification, reliable locating, controlled drilling, and consistent communication help crews manage uncertainty throughout the bore.

When you need dependable locating equipment, MTI Equipment offers a variety of new and used underground locators for drilling professionals, including HDD locating systems suited to different jobsite needs. The right locator, paired with disciplined field practices, can help your crew maintain better awareness and make confident decisions underground. Explore our inventory today.