You are here:

IMACS

Intermountain Antiquities Computer System (IMACS) Guide

The Intermountain Antiquities Computer System (IMACS) Guide contains instructions and computer codes for the IMACS Site Form. This form is approved for use in the following areas:
  • Utah BLM, NPS, and USFS administered lands. State lands.
  • Idaho BLM administered lands (except northern Idaho). All Region-4 National Forests (Payette, Boise, Salmon, Challis, Caribou, Sawtooth, Targhee NFs). State lands.
  • Nevada All BLM and USFS administered lands. Department of Highways lands/projects.
  • Wyoming Targhee and Bridger-Teton National Forests, all BLM and NPS administered lands.
  • California Toiyabee National Forest

Ordering information

Full size manual: The full-size manual is now available by downloading PDF files from this page. See below. This is NOT an update, although the dates on the bottom of the pages have changed.

To download an IMACS manual, illustrations, or forms, with Adobe Acrobat, select from the links below:

Manual

100. General Introduction
110. IMACs Members
110. IMACs Representatives
120. History
130. Administration
140. Revisions
200. Forms
300. Recording the Site
310. Survey Organization Codes
310. Administrative Data
320. Prehistoric Site Data
330. Historic Site Data
410. Primary Landform
420. Secondary Landform
430. Depositional Context
435. State Geographic Units
440. Projectile Points
445. Flaking Stages
450. Cabin Notching
455. Life Zones
460 On-site Community Code
465. National Register Criteria
470. Nails
471. Tin Cans
472. Bottles
473. Ceramics
471. Cartridges
475. Buttons
476. Shoes
477. Barbed Wire
485. UTM Instructions
510. Rock Art
610. References

Illustrations

Illustrations were scanned in separately as jpg files and can be downloaded
from the following: Title page
310A. UTM Calculator
440. PPoint1
440. PPoint2
440. PPoint3
440. PPoint4
440. PPoint5
440. PPoint6
440. PPoint7
440. PPoint8
450. Cabin Notching
470. Nails
471. Tin cans #1
471. Tin cans #2
472. Bottle bases
472. Beverage bottles
472. Household bottles
472. Chemical and medicine bottles
472. Bottle seams
472. Bottle necks
472. Bottle terms
473. Ceramics #1
473. Ceramics #2
473. Ceramics #3
473. Ceramics #4
473. Ceramics #5
473. Ceramics #6
473. Ceramics #7
473. Ceramics #8
475. Buttons
476. Horseshoes
485. UTM 1
485. UTM 2
485. UTM 3
485. UTM 4
485. UTM 5
485. UTM 6
485. UTM 7

Maps

Maps are not currently available from this site.

Forms

To download IMACS forms with Adobe Acrobat, click on the relevant link below:

Part A: Administrative Data
Part A: Environmental Data
Part B: Prehistoric Sites, Page 1
Part B: Prehistoric Sites, Page 2
Part C: Historic Sites, Page 1
Part C: Historic Sites, Page 2
Encoding Form
Rock Art Attachment


Other questions

To ask questions about forms, codes, etc., contact your local State Historic Preservation Office (SHPO).

To obtain a Survey Organization Code, contact the Utah State Historic Preservation Office (801 533 3500).


The most recent IMACS update was June 1992.
Last Updated: 11/28/16