How to Plan Your Next Prospecting or Detecting Trip with Gold Prospector

The best trips are won at the kitchen table, not in the field. After 25+ years of prospecting and detecting since 2017, I can tell you most of my skunked days came from bad planning: the wrong creek, ground somebody already had claimed, or an old townsite that turned out to be a subdivision.

I built Gold Prospector to fix that. It stacks the maps I used to juggle across a dozen websites, paper topos and county offices into one app on your phone. This guide walks through how I plan a trip with it, which layers to turn on, and in what order, whether you are chasing color in a gravel bar or coins and relics around an 1880s stage stop.

The process is the same for both crowds:

1. Confirm you can legally be there.
2. Find where the gold or the history should be.
3. Read the ground up close.
4. Get a second opinion.
5. Go offline and head out.

Step 1: Make sure you can legally be there

Before I look for gold or history, I look for permission. The richest spot on the map is worthless if it is somebody's backyard or an active claim. Three layers answer that question for the whole lower 48.

Public Lands. This layer shows who manages the ground: BLM, Forest Service, state land, parks, wilderness and more. Color tells you at a glance whether you are on federal, state or local land. Rules differ a lot between them, so I treat this as a starting point. Recreational panning is welcome on plenty of BLM and Forest Service ground, while national parks and many state parks are off limits for both panning and detecting.

Mining Claims. Over 560,000 active BLM claims and about 80,000 closed ones, updated nightly. An active claim means the minerals belong to someone else, even on public land. Closed claims are worth a look too, because they show where people found enough to stake ground in the first place.

Parcels. Property lines for more than 100 million parcels across 2,000+ counties. Tap a parcel to see its boundary and details. For detectorists this is the big one: most relic hunting happens on private land, and knowing exactly whose field you are looking at is how you knock on the right door and ask permission.

My rule: if all three layers do not give me a clear answer, I call the local BLM or Forest Service office before I go. The app gets you 95% of the way, and a five minute phone call covers the rest.

Step 2 for gold prospectors: find where the gold should be

Gold is heavy and lazy. It came from somewhere, it moved downhill in water, and it dropped out wherever the water slowed down. These layers help you trace that story backward.

Pay Streak Zones. This is where I start. The layer scores stream reaches using gold-flagged historic workings, stream geochemistry samples and geology, then ranks them Best, Better and Good. It currently covers California, Nevada, Arizona, Oregon, Washington, Idaho and Colorado.

Gold Traps. Zoom in and this layer marks the specific spots along a stream where the physics favor gold dropping out: inside bends, slope breaks and places where the channel widens. Pay Streak Zones tells you which creek. Gold Traps tells you where on that creek to dig.

Streams and Lakes. Every stream in the lower 48, tappable. Tap one to see whether it is perennial, intermittent or ephemeral, its size, and its average flow. That matters more than people think. A dry wash in October might be a perfect drywash or detecting target, and a big river in June might be unworkable.

Mineral Deposits and Historic Mines. These show where the old timers found gold, silver and other minerals, and where they dug. The old timers did not find everything, but they rarely dug where there was nothing. I look for clusters of workings and then trace the drainages below them.

Rock Types. Gold has favorite neighbors. Tap anywhere to see the underlying rock unit. Contacts between rock types, especially near quartz-bearing metamorphic and granitic rocks, are classic places to start asking questions.

Step 2 for detectorists: find where people used to be

Coins and relics show up where people lived, worked, traveled and gathered. The trick is finding those places after the buildings are gone. These layers are basically time machines.

Historic Topo Maps. Scanned USGS topographic sheets going back to 1879, covering the lower 48. They come in three era bands you can toggle on their own, with a shared opacity slider. Fade one over the modern satellite and you will see homesteads, schools, churches, mills, roads and towns that no longer exist. Every small black square on an old topo is a building, and every building had people dropping coins around it.

Historic Maps. A library of more than 310,000 historic map sheets from the late 1800s to 1930. Using the Historic Map Builder, you pick a sheet for your area and line it up right on the map, then fade it against today's imagery. These sheets often show individual buildings by street address, so you can pinpoint where a hotel, livery stable or saloon once stood. Your placed sheets are yours to keep, and Pro members can see the sheets other users have already lined up.

Historic Sites. Battlefields and National Register sites drawn right on the map. Tap one to see its name, time period and what it was.

Historic Railroads. Old rail lines and stops. Depots, section houses and water stops were busy places, and the old grades are often still walkable today.

Ghost Towns. Thousands of vanished towns, mining camps, stage stops, mills, schools and old settlements across the lower 48, each marked with a pin. Tap one to see its name, type, county and post office years. Tap "Tell me more" and the app researches the place for you, then fills in a short card with when it was active, how big it got, what it was there for, why it faded away, and what is left today. Many of these places never made it onto Wikipedia or a modern map, and that is exactly why they are still worth detecting. Once a place has been researched, the card is there for everyone who taps it after you.

Old trails and roads. On the historic topos, look for dashed trails and roads that do not match today's roads. Wagon roads and stage routes are some of my favorite places to swing a detector, especially where they crossed creeks, climbed grades or stopped for the night.

Step 3: Read the ground up close

Once I have a target, I want to see the actual dirt before I burn a tank of gas getting there. This is where both crowds use the same tools.

Ultra 1m LiDAR. LiDAR strips away the trees and brush and shows the bare ground at one meter resolution. Prospectors will see old ditches, hydraulic pits, tailing piles, terraces and ancient channel benches. Detectorists will see cellar holes, building pads, old road cuts, foundations and trails hiding under the canopy. It is the closest thing to X-ray vision for the woods. The layer only shows true 1m data, and it marks a clean edge where coverage ends, so you always know what you are looking at. Zoom out and you can see at a glance which areas have coverage. Ultra 1m is live across California, Oregon, Idaho, Nevada and Arizona, with more states being added one by one.

3D Terrain. Tilt the map and the hills stand up. I use it to judge how steep the walk in will be, whether a bench is really a bench, and where water would have pooled or slowed. It is free for everyone.

Recent Burns. Wildfire scars from the last ten years, each showing the fire name, year, acres and a read on how much brush has likely grown back. A fresh burn can open up ground that was impossible to work for decades. Zoom in and you can see burn severity patch by patch. Always check that the area is open to the public again before you go, and be careful of falling trees and unstable slopes.

Satellite. Don't skip plain old satellite imagery. Combined with the layers above, it tells you if there is a road, a gate or a new house where you were planning to park.

Step 4: Get a second opinion

Even after 25 years I like bouncing ideas off someone. Gold Prospector has two built-in ways to do that.

AI Terrain Analysis. Point the map at an area and run an analysis. It looks at the terrain and the surrounding data and gives you a written read on the spot: what the landforms suggest, where water likely concentrated material, and what to check when you get there. I use it as a sanity check, not a treasure map.

GoldBot. A chat assistant built for prospectors and detectorists. Ask it how to work a bedrock crack, what a certain rock type means for gold, how to approach a landowner, or how to clean a corroded relic. It is part of Pro.

Coin and Relic ID. Not a planning tool exactly, but it closes the loop. Snap two photos of a find and the app gives you likely identifications, era, material and preservation tips, and saves the result to your find log. Knowing what you dug at a site tells you a lot about where to go next.

Step 5: Go offline and head out

The good spots almost never have cell service. Do this part at home on Wi-Fi.

• Drop pins on every target you found: the creek bend, the cellar hole, the old depot. Pins are free and work with no signal.
• Download the area for offline use. Pro lets you save a region with satellite, Ultra 1m LiDAR, historic topos, claims, public lands, parcels, and streams and lakes, plus the elevation data for 3D terrain. Put your phone in airplane mode before you leave and make sure it all loads.
• Track your trail. GPS and trail tracking work offline, so you can always find your way back to the truck and see exactly where you have already worked.
• Log your finds. Every nugget, coin and relic goes in the find log with its location. Over a season that log becomes your own private map of what produces.
• Watch for claims in the field. With the Mining Claims layer on, the app alerts you when you wander near an active claim, so you do not end up working someone else's ground by accident.

Two real-world workflows

A weekend gold trip. Turn on Pay Streak Zones and find a Best-rated reach. Switch on Mining Claims and Public Lands and look for open BLM or Forest Service ground along it. Add Gold Traps to pick specific bends, then check Streams and Lakes to see if it will have water this time of year. Flip to Ultra 1m LiDAR to spot old workings and benches above the creek. Run an AI Terrain Analysis, pin your top three spots, and download the area.

A relic hunt. Fade a Historic Topo from around 1900 over satellite and scan for buildings, schools and roads that are gone today. Load a sheet in the Historic Map Builder if the town has one. Check Historic Railroads and Historic Sites nearby. Switch to Parcels to see who owns the ground now, and Ultra 1m LiDAR to find the cellar holes and building pads in the trees. Pin the site, then go knock on the landowner's door.

Layer cheat sheet

Plan smarter, dig more

None of these layers will dig the hole for you. What they do is stack the odds: legal ground, the right creek or the right old townsite, and a clear look at the dirt before you leave the house. That is how you stop driving around hoping and start spending your day swinging a detector or running a pan.

Gold Prospector covers the entire lower 48. The basemaps, 3D terrain, GPS, pins, trail tracking and find log are free forever, and every layer in this guide is included with a free 7-day Pro trial, no credit card needed. Download Gold Prospector on the App Store and plan your next trip tonight.

See you out there,

Jordan S.