In the rectangular survey system, a section contains how many acres?
Correct Answer
C) 640 acres
A section in the rectangular survey system is one square mile, which equals 640 acres (1 mile × 1 mile = 640 acres). This is a fundamental measurement in the government survey system.
Why This Is the Correct Answer
A section is defined as one square mile in the rectangular survey system. Since one square mile contains exactly 640 acres (this is a standard conversion), a section always contains 640 acres. This is a fixed measurement that forms the basis for all smaller subdivisions within the rectangular survey system. Each township contains 36 sections, and sections can be further subdivided into halves, quarters, and smaller parcels.
Why the Other Options Are Wrong
Option A: 160 acres
160 acres represents a quarter-section, not a full section. This is a common subdivision where a section is divided into four equal parts.
Option B: 320 acres
320 acres represents a half-section, which occurs when a section is divided into two equal parts, either north/south or east/west.
Option D: 1,280 acres
1,280 acres would represent two full sections combined, which is not a standard unit in the rectangular survey system and exceeds the size of a single section.
The 640 Section Rule
Remember 'Six-Forty Section' - the alliteration helps you remember that a Section = 640 acres. You can also think '64 × 10 = 640' or visualize a square mile as a large city block that contains 640 football fields (approximately).
How to use: When you see any question about sections in the rectangular survey system, immediately think '640 acres.' If the question asks about half-sections, divide by 2 (320). If it asks about quarter-sections, divide by 4 (160).
Exam Tip
Memorize the basic conversions: Section = 640 acres, Half-section = 320 acres, Quarter-section = 160 acres. These numbers appear frequently on appraisal exams in various contexts.
Common Mistakes to Avoid
- -Confusing section acreage with township acreage (23,040 acres)
- -Mixing up quarter-section (160 acres) with full section measurements
- -Forgetting that these measurements are fixed regardless of the actual terrain or state location
Concept Deep Dive
Analysis
This question tests fundamental knowledge of the rectangular survey system (also called the Public Land Survey System), which is the primary method of land description used in most western and midwestern states. The rectangular survey system divides land into a grid pattern using townships, ranges, and sections as the basic units of measurement. Understanding the acreage contained in each unit is essential for property description, boundary determination, and area calculations in real estate appraisal. This system was established by the Land Ordinance of 1785 and remains the foundation for legal property descriptions in 30 states.
Background Knowledge
The rectangular survey system uses a hierarchical structure where townships (6 miles × 6 miles = 36 square miles) are divided into 36 sections, each measuring 1 mile × 1 mile. The fundamental conversion to remember is that 1 square mile = 640 acres, which is a standardized measurement used throughout the United States.
Real-World Application
When appraising rural or agricultural properties, appraisers frequently encounter legal descriptions using the rectangular survey system. Knowing that a section contains 640 acres helps in quickly calculating property sizes, comparing sales, and determining if a legal description makes sense (e.g., a property described as 'NE 1/4 of Section 12' should be approximately 160 acres).
More Property Description Questions
Property zoned as R-2 typically allows for:
In the rectangular survey system, a section contains how many acres?
Which property right includes the right to receive rental income from a tenant-occupied property?
A property is located in a 100-year flood zone. This means the property has what probability of flooding in any given year?
In a metes and bounds description, the term 'metes' refers to:
People Also Study
Valuation Principles & Procedures
25% of exam
Market Analysis & Highest/Best Use
15% of exam
Appraisal Math & Statistics
15% of exam
USPAP (Ethics & Standards)
15% of exam
Report Writing & Compliance
10% of exam