Department of Interior (DOI)
6,500,032Words in 707 parts
9.9Restriction density (per 1,000 words)
17.4Reading grade
61.4%Unchanged since 2017
56Flagged parts
2026-11-02Last change
Section changes per year
From the eCFR versioner, for the parts that the agency owns now. Before 2017 is the baseline load.
Text and size
- Sentences
- 32.2 words on average; 22.9% over 40 words; 28.2% passive; 12.1 cross-references per 1,000 words
- Sentence types
- definition 5.2% · prohibition 3.1% · paperwork 6.6% · obligation 17.4% · permission 10.3% · other 57.3%
- Checksum
523f9d528e84320e1fd3436624ba95a3e1c6c09be22fe53167b977640f4da5ecchanged since last refresh
Review candidates in this agency
| Rank | Part | Words | Score |
|---|---|---|---|
| 7 | 48 CFR 1433
PROTESTS, DISPUTES, AND APPEALS
High signals: Restriction density
+5.2 SD · Paperwork share
+4.3 SD · Directive share
+3.3 SD |
1,116 | 1.84 |
| 38 | 43 CFR 23
SURFACE EXPLORATION, MINING AND RECLAMATION OF LANDS
High signals: Directive share
+2.7 SD · Reading grade
+2.1 SD · Paperwork share
+2.0 SD · Restriction density
+1.1 SD |
5,292 | 1.45 |
| 55 | 43 CFR 2300
LAND WITHDRAWALS
High signals: Paperwork share
+2.9 SD · Directive share
+1.6 SD · Restriction density
+1.1 SD |
10,229 | 1.31 |
| 62 | 43 CFR 3470
COAL MANAGEMENT PROVISIONS AND LIMITATIONS
High signals: Directive share
+2.5 SD · Paperwork share
+2.3 SD · Restriction density
+1.2 SD |
8,295 | 1.29 |
| 63 | 43 CFR 3450
MANAGEMENT OF EXISTING LEASES
High signals: Directive share
+3.0 SD · Paperwork share
+2.3 SD · Restriction density
+2.0 SD |
2,873 | 1.29 |
| 67 | 25 CFR 542
MINIMUM INTERNAL CONTROL STANDARDS
High signals: Restriction density
+2.8 SD · Directive share
+2.0 SD · Size
+1.9 SD |
54,730 | 1.26 |
| 71 | 43 CFR 6
PATENT REGULATIONS
High signals: Paperwork share
+2.4 SD · Directive share
+1.9 SD · Reading grade
+1.4 SD |
5,604 | 1.24 |
| 74 | 43 CFR 3740
PUBLIC LAW 585; MULTIPLE MINERAL DEVELOPMENT
High signals: Paperwork share
+2.3 SD · Reading grade
+2.2 SD · Directive share
+1.1 SD |
4,451 | 1.23 |
| 97 | 30 CFR 933
NORTH CAROLINA
High signals: Paperwork share
+5.2 SD · Restriction density
+1.8 SD · Directive share
+1.6 SD |
3,438 | 1.16 |
| 109 | 43 CFR 2720
CONVEYANCE OF FEDERALLY-OWNED MINERAL INTERESTS
High signals: Paperwork share
+2.6 SD · Directive share
+1.4 SD · Restriction density
+1.3 SD · Reading grade
+1.2 SD |
2,934 | 1.12 |
| 133 | 30 CFR 922
MICHIGAN
High signals: Paperwork share
+5.3 SD · Directive share
+1.7 SD · Restriction density
+1.6 SD |
2,876 | 1.07 |
| 136 | 30 CFR 910
GEORGIA
High signals: Paperwork share
+5.1 SD · Restriction density
+1.9 SD · Directive share
+1.8 SD |
2,752 | 1.06 |
| 141 | 50 CFR 37
GEOLOGICAL AND GEOPHYSICAL EXPLORATION OF THE COASTAL PLAIN, ARCTIC NATIONAL WILDLIFE REFUGE, ALASKA
High signals: Directive share
+2.0 SD · Restriction density
+1.5 SD |
14,781 | 1.06 |
| 143 | 43 CFR 3420
COMPETITIVE LEASING
High signals: Directive share
+2.1 SD · Restriction density
+1.5 SD · Paperwork share
+1.0 SD |
11,863 | 1.06 |
| 158 | 43 CFR 3835
WAIVERS FROM ANNUAL MAINTENANCE FEES
High signals: Paperwork share
+3.9 SD · Directive share
+1.2 SD · Restriction density
+1.2 SD |
3,254 | 1.05 |
| 163 | 43 CFR 431
GENERAL REGULATIONS FOR POWER GENERATION, OPERATION, MAINTENANCE, AND REPLACEMENT AT THE BOULDER CANYON PROJECT, ARIZONA/NEVADA
High signals: Directive share
+2.7 SD · Restriction density
+2.0 SD |
2,415 | 1.04 |
| 179 | 30 CFR 250
OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF
High signals: Size
+2.7 SD · Directive share
+1.5 SD · Restriction density
+1.3 SD |
135,644 | 1.03 |
| 193 | 30 CFR 937
OREGON
High signals: Paperwork share
+5.0 SD · Restriction density
+1.7 SD · Directive share
+1.5 SD |
3,097 | 1.00 |
| 194 | 30 CFR 947
WASHINGTON
High signals: Paperwork share
+4.7 SD · Directive share
+1.7 SD · Restriction density
+1.4 SD |
4,082 | 1.00 |
| 207 | 25 CFR 226
LEASING OF OSAGE RESERVATION LANDS FOR OIL AND GAS MINING
High signals: Restriction density
+2.7 SD · Directive share
+2.1 SD |
10,741 | 0.98 |
| 211 | 30 CFR 783
UNDERGROUND MINING PERMIT APPLICATIONS—MINIMUM REQUIREMENTS FOR INFORMATION ON ENVIRONMENTAL RESOURCES
High signals: Reading grade
+3.4 SD · Paperwork share
+2.8 SD · Directive share
+1.8 SD |
1,892 | 0.98 |
| 212 | 30 CFR 912
IDAHO
High signals: Paperwork share
+5.1 SD · Restriction density
+2.0 SD · Directive share
+1.5 SD |
2,554 | 0.97 |
| 226 | 25 CFR 291
CLASS III GAMING PROCEDURES
High signals: Paperwork share
+2.3 SD · Reading grade
+1.9 SD · Directive share
+1.3 SD |
2,287 | 0.96 |
| 231 | 48 CFR 1415
CONTRACTING BY NEGOTIATION
High signals: Restriction density
+2.2 SD · Directive share
+2.0 SD · Paperwork share
+1.5 SD |
2,419 | 0.95 |
| 239 | 30 CFR 800
BOND AND INSURANCE REQUIREMENTS FOR SURFACE COAL MINING AND RECLAMATION OPERATIONS UNDER REGULATORY PROGRAMS
High signals: Directive share
+2.6 SD · Restriction density
+1.7 SD · Paperwork share
+1.5 SD · Reading grade
+1.0 SD |
8,040 | 0.94 |
Score: the mean of six signals, in standard deviations (SD). Across the CFR, the top 641 of 6,402 ranked parts (10%) get a flag for review; this list shows 25. A flag is not a finding.
Statutes behind the most text
- 16 U.S.C. 1361: 1,124,271 words in 5 parts (17.3% of this agency's text)
- 16 U.S.C. 1801: 1,079,425 words in 7 parts (16.6% of this agency's text)
- 5 U.S.C. 301: 906,536 words in 135 parts (13.9% of this agency's text)
- 16 U.S.C. 773: 592,363 words in 2 parts (9.1% of this agency's text)
- 31 U.S.C. 9701: 533,608 words in 39 parts (8.2% of this agency's text)
- 30 U.S.C. 1201: 488,323 words in 115 parts (7.5% of this agency's text)
- 25 U.S.C. 2: 438,543 words in 52 parts (6.7% of this agency's text)
- 16 U.S.C. 7001: 299,773 words in 1 parts (4.6% of this agency's text)
- 43 U.S.C. 1201: 270,721 words in 35 parts (4.2% of this agency's text)
- 30 U.S.C. 181: 269,930 words in 25 parts (4.2% of this agency's text)
From the authority notes. A citation is not proof that the statute requires the rule.
Largest parts
- 50 CFR 17: ENDANGERED AND THREATENED WILDLIFE AND PLANTS (1,076,406 words)
- 50 CFR 648: FISHERIES OF THE NORTHEASTERN UNITED STATES (306,356 words)
- 50 CFR 660: FISHERIES OFF WEST COAST STATES (299,773 words)
- 50 CFR 679: FISHERIES OF THE EXCLUSIVE ECONOMIC ZONE OFF ALASKA (292,590 words)
- 50 CFR 622: FISHERIES OF THE CARIBBEAN, GULF OF AMERICA, AND SOUTH ATLANTIC (171,361 words)
- 50 CFR 32: HUNTING AND FISHING (169,387 words)
- 50 CFR 600: MAGNUSON-STEVENS ACT PROVISIONS (148,391 words)
- 30 CFR 250: OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF (135,644 words)
- 43 CFR 51: SUBSISTENCE MANAGEMENT REGULATIONS FOR PUBLIC LANDS IN ALASKA (88,926 words)
- 43 CFR 4: DEPARTMENT OF THE INTERIOR HEARINGS AND APPEALS PROCEDURES (86,292 words)
Sub-agencies
- Bureau of Indian Affairs
- Bureau of Land Management
- Bureau of Ocean Energy Management
- Bureau of Reclamation
- Bureau of Safety and Environmental Enforcement
- Geological Survey
- Indian Arts and Crafts Board
- National Indian Gaming Commission
- National Park Service
- Office of Indian Affairs Assistant Secretary
- Office of Natural Resources Revenue
- Office of Secretary of the Interior
- Office of Special Trustee for American Indians
- Office of Surface Mining Reclamation and Enforcement
- United States Fish and Wildlife Service
Reading grade and sentence types are approximate. Simple rules label each sentence; the first match wins.