Reading a NAIP aerial before you go
Most camp pages down in the lower 48 carry a summer aerial (Alaska has no coverage, so those pages skip it). It's a real tool for sizing up a spot before you drive out — but only if you know what it is and, more to the point, what it can't tell you. Here's how to read it.
Read which kind of page you're on first
The pin is a logged GPS point, not the campsite itself. On a dispersed page the pin often sits on the access road, and the places to camp are the open clearings on and just off the two-track. On a developed campground page it's different — the sites are the marked spots strung along the campground loops, not the open ground off them. The little caption under each aerial tells you which one you're looking at, so read that before you read the picture.
Know what the aerial actually is
It's a NAIP frame — the government's summer aerial program that maps the whole lower 48 (it started for farm country, but it covers the forest and desert too). What we show is the public USGS NAIP layer, and we self-host the tile so it loads fast. It's flown "leaf-on" in the middle of summer, it's roughly meter-class terrain shown about 660 m across, and it's a snapshot, not a live feed. We don't print the flight year on the card, and NAIP only gets reflown every few years, so treat it as dated by default — a given frame can easily be a couple of summers old, or older.
Open ground near the tracks is a candidate, not a green light
On a dispersed page, two-track roads and bare clearings near the pin are where a vehicle might fit — a place to go look, not permission to park. Open dirt in a photo can be private, gated, seasonally closed, or a dead end, and the aerial can't tell you which of those it is. Use it to pick where to point the truck, then confirm the rest on the ground.
Canopy is shade — and a blind spot
Heavy tree cover means shade and usually a tighter spot, often with no room to swing a big rig around. It also hides things: leaves can cover the ground, the road, and whatever's under them. And remember you're looking at a summer frame — in leaf-off, snow, or mud, the same place can look nothing like the picture you studied.
Stay up out of the low ground
Dark lines and drainage bottoms are washes, and a dry wash in a summer photo is exactly where flash water runs when a storm hits upstream. Read low ground as a reason to camp up and out of it — not as a full flood map. A 660 m frame won't show you the whole drainage that feeds it.
The photo can't tell you the things that matter most
It won't tell you who owns or manages the spot, whether there's a fee, whether the road is washed out or gated, whether that water is flowing, or what's closed right now. It's terrain and roads only — never a claim that a place is legal, free, or open. Before you commit, check the managing unit's own page, that unit's travel map (the forest MVUM, or the BLM or state travel map for the area), and recent conditions. The aerial gets you pointed the right way; it doesn't hand you a legal, open, drivable site by itself.
An aerial is a head start, not a guarantee. Read the caption, treat the ground as a candidate and the date as old, and confirm the rest with the agency before you turn off the pavement.