Redemarcation of the Land Boundary between Iran and Iraq contain details on the alignment of the boundary including a description of the pillars and a list of their coordinates. The mixed commission also plotted the boundary on a special series of map sheets at a scale of 1:50,000.
From the junction of the thalweg of the Shatt al Arab and the Nahr al Khaiin, the line extends to boundary pillar (B.P.) No. 1 (30º27'13"N., 48º06'33"E.) on the latter stream. It then follows the median line of the Nahr al Khaiin northwestward for 8.94 kilometers (5.56 miles) to B.P. No. 2 (30º28'40"N., 48º01'27"E.).
The boundary continues northward from B.P. No. 2 across a flat plain by a series of straight-line segments for about 57 kilometers (35 miles) to B.P. No. 12 (30º59'53"N., 48º01'56"E.). It then turns westward, continuing by short straight-line segments for about 31 kilometers (19 miles) to B.P. No. 14-A (31º00'01"N., 47º40'54"E.). From this point, the boundary extends northward across a swampy plain by straight-line segments to B.P. No. 14-B; it then extends northeastward again by straight-line segments for about 46 kilometers (29 miles) to B.P. No. 15 (31º47'05"N., 47º51'57"E.) at the eastern limit of the Tigris valley.
Northwestward from B.P. No. 15, the boundary follows the relatively low foothills of the Zagros Mountains for about two-thirds of the distance to the Turkish tripoint. It utilizes numerous ridges, ravines, and straight-line segments. The line crosses most of the rivers that flow southeastward to the Tigris valley, leaving their headwaters in Iran. In some cases, the boundary follows for short distances the median line of such rivers as the Nahr at Tib and the Nahr Wadi. In places, drainage divides and roads also determine the boundary alignment.
In the northern third of the land boundary, the line follows the crests of a number of high ranges to the tripoint with Turkey at B.P. No. 125/12 (37º11'40"N., 44º46'E.). The tripoint is located less than 50 kilometers (31 miles) west of Lake Urmia (Daryachen-ye Re Za'iyeh), which has a surface elevation of 1,274 meters (4,180 feet). By utilizing the crests of the ranges, the boundary follows the drainage divide in many places. The line also extends through passes and follows the median line of such rivers as the Little Zab.