Entering DLS locations

The legal survey location component for Alberta is the Dominion Land Survey (DLS) system. It is used in Alberta, Saskatchewan, Manitoba, and a portion of British Columbia.

Enter the DLS location according to the following rules.

Field

Description

Valid Values

ES

The event sequence (ES) code is a one-character code showing the chronological sequence of a significant drilling and/or completion operation of a drillhole that yields a separate and unique set of geological or production data.

0-9

1 is not

used.

LSD

A section is divided into legal subdivisions (LSDs) which are numbered from 1 to 16. An LSD measures 402 by 402 m. (1320 by 1320 feet)

01 - 16

Section

After township, range, and meridian have been located for a drillhole, the next portion of the DLS is the section. Sections are numbered 1 - 36. A section measures 1.609 by 1.609 km (1 mile by 1 mile).

01-36

Township

Each area west of a meridian subdivides north-south

into townships. Townships are numbered 001-126. A township measures 9.7 km (6 miles) north to south.

001-126

Range

Each meridian area (e.g., W4, W5, and W6) subdivides into ranges. A range measures 9.7 km (6 miles) east to west.

1-30 for W4 &W5; 1-14 for W6

Meridian

The province of Alberta is subdivided into three areas defined by the meridians of longitude referred to as west (W) of the fourth, fifth, and sixth meridians.

W4, W5, W6

LE

The location exception (LE) code is used to identify cases where there is more than one drillhole on the smallest land area described by the DLS system. The LE code describes more than one drillhole in a legal subdivision. In addition, LE is generally used to describe the sequence in which the drillholes were drilled in the legal subdivision.

00-19

01 is not used.