It can be found underneath a cart on the upper level of Grafton Dam, in a room across from the one with three monkey toys.
George N. Smith: This is Director George N. Smith recording what may be my final memo. The earthquakes that followed the nukes cracked the dam somewhere. I can't see the rupture, but the lake level has dropped dramatically. The Pioneer Scout Camp got it worse though. Some sort of underground sink hole dropped most of it to below the normal lake water level. Ironically it's now at the new beach front level. If the reservoir were full, it would be totally submerged. I'm heading out now to see if anyone out there needs help. I don't know what I'll find. This is George N. Smith signing off.
The holotape is placed in an awkward position, making it difficult to acquire it. The cursor may need to be pointed slightly away from the holotape itself.