eCFR Analyzer

United States Fish and Wildlife Service (FWS)

3,112,316Words in 66 parts
6.6Restriction density (per 1,000 words)
16.5Reading grade
29.5%Unchanged since 2017
1Flagged 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
32.3 words on average; 21.2% over 40 words; 24.5% passive; 10.6 cross-references per 1,000 words
Sentence types
definition 3.7% · prohibition 2.8% · paperwork 4.1% · obligation 12.0% · permission 7.8% · other 69.7%
Checksum
c0c771f3c0efda341ac5d67be290c1b0004fe856be9b952b10cc80d18a00dce5 changed since last refresh

Review candidates in this agency

RankPartWordsScore
141 top 10% 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
718 50 CFR 14 IMPORTATION, EXPORTATION, AND TRANSPORTATION OF WILDLIFE
High signals: Restriction density +1.2 SD · Size +1.0 SD
 19,894 0.67
821 50 CFR 403 TRANSFER OF MARINE MAMMAL MANAGEMENT AUTHORITY TO STATES
High signals: Directive share +1.9 SD · Reading grade +1.4 SD · Restriction density +1.1 SD
 5,196 0.63
1,272 50 CFR 90 FEEDING DEPREDATING MIGRATORY WATERFOWL
High signals: Directive share +1.3 SD
 1,435 0.48
1,346 50 CFR 18 MARINE MAMMALS
High signals: Size +1.3 SD
 26,865 0.46
1,452 50 CFR 27 PROHIBITED ACTS
High signals: Directive share +1.8 SD · Restriction density +1.7 SD
 3,565 0.43
1,472 50 CFR 13 GENERAL PERMIT PROCEDURES
High signals: none above 1 SD; ranked by the combined score
 8,263 0.42
1,549 50 CFR 15 WILD BIRD CONSERVATION ACT
High signals: Reading grade +1.7 SD
 7,456 0.40
1,668 50 CFR 11 CIVIL PROCEDURES
High signals: Directive share +1.2 SD · Restriction density +1.0 SD
 2,502 0.37
1,813 50 CFR 29 LAND USE MANAGEMENT
High signals: Size +1.1 SD
 21,749 0.32
1,898 50 CFR 24 IMPORTATION AND EXPORTATION OF PLANTS
High signals: Reading grade +3.2 SD
 1,055 0.30
2,314 50 CFR 21 MIGRATORY BIRD PERMITS
High signals: Size +1.8 SD
 49,908 0.20
2,501 50 CFR 648 FISHERIES OF THE NORTHEASTERN UNITED STATES
High signals: Size +3.4 SD
 306,356 0.15
2,732 50 CFR 82 ADMINISTRATIVE PROCEDURES FOR GRANTS-IN-AID (MARINE MAMMAL PROTECTION ACT OF 1972)
High signals: none above 1 SD; ranked by the combined score
 2,408 0.10
2,900 50 CFR 34 REFUGE REVENUE SHARING WITH COUNTIES
High signals: none above 1 SD; ranked by the combined score
 2,208 0.06
2,957 50 CFR 86 BOATING INFRASTRUCTURE GRANT PROGRAM
High signals: none above 1 SD; ranked by the combined score
 12,871 0.05
3,047 50 CFR 16 INJURIOUS WILDLIFE
High signals: none above 1 SD; ranked by the combined score
 5,097 0.03
3,111 50 CFR 600 MAGNUSON-STEVENS ACT PROVISIONS
High signals: Size +2.8 SD
 148,391 0.02
3,126 50 CFR 660 FISHERIES OFF WEST COAST STATES
High signals: Size +3.4 SD
 299,773 0.01
3,150 50 CFR 679 FISHERIES OF THE EXCLUSIVE ECONOMIC ZONE OFF ALASKA
High signals: Size +3.4 SD
 292,590 0.01
3,256 50 CFR 635 ATLANTIC HIGHLY MIGRATORY SPECIES
High signals: Size +2.2 SD
 75,004 -0.02
3,332 50 CFR 36 ALASKA NATIONAL WILDLIFE REFUGES
High signals: Size +1.0 SD
 19,741 -0.03
3,345 50 CFR 23 CONVENTION ON INTERNATIONAL TRADE IN ENDANGERED SPECIES OF WILD FAUNA AND FLORA (CITES)
High signals: Size +1.7 SD
 43,859 -0.04
3,487 50 CFR 680 SHELLFISH FISHERIES OF THE EXCLUSIVE ECONOMIC ZONE OFF ALASKA
High signals: Size +1.9 SD
 55,515 -0.06
3,524 50 CFR 28 ENFORCEMENT, PENALTY, AND PROCEDURAL REQUIREMENTS FOR VIOLATIONS OF SUBCHAPTER C
High signals: none above 1 SD; ranked by the combined score
 1,168 -0.07

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 (36.1% of this agency's text)
  • 16 U.S.C. 1801: 1,079,425 words in 7 parts (34.7% of this agency's text)
  • 16 U.S.C. 773: 592,363 words in 2 parts (19.0% of this agency's text)
  • 16 U.S.C. 7001: 299,773 words in 1 parts (9.6% of this agency's text)
  • 5 U.S.C. 301: 236,947 words in 15 parts (7.6% of this agency's text)
  • 16 U.S.C. 460k: 234,279 words in 10 parts (7.5% of this agency's text)
  • 16 U.S.C. 1861a: 148,391 words in 1 parts (4.8% of this agency's text)
  • 5 U.S.C. 561: 148,391 words in 1 parts (4.8% of this agency's text)
  • 16 U.S.C. 1531: 85,858 words in 9 parts (2.8% of this agency's text)
  • 16 U.S.C. 971: 75,004 words in 1 parts (2.4% 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)
  • 50 CFR 635: ATLANTIC HIGHLY MIGRATORY SPECIES (75,004 words)
  • 50 CFR 665: FISHERIES IN THE WESTERN PACIFIC (65,144 words)
  • 50 CFR 680: SHELLFISH FISHERIES OF THE EXCLUSIVE ECONOMIC ZONE OFF ALASKA (55,515 words)

Reading grade and sentence types are approximate. Simple rules label each sentence; the first match wins.