A collection of resources we'll use in our travels...


Missouri Map I

542.2 Nishnaborna River, left. Watson Access, 1.5 miles up Nishnabotna River.
530.6 Langdon Bend Access on left.
525.3 Hoot Owl Bend Access on left. Difficult canoe/kayak access due to high bank.
520.7 Deroin Bend Conservation Area, left, begins.
516.0 Deroin Bend CA ends.
510.0 H.F Thurnau Conservation Area, left, begins.
508.5 H.F Thurnau Access.
507.6 H.F Thurnau CA ends.
502.4 Rush Bottoms Conservation Area, left, begins.
499.8 Rush Bottoms CA ends.
486.3 Bob Brown Conservation Area, left, begins.
482.8 Bob Brown CA ends.
477.0 Payne Landing Access on left.

Missouri Map II

477.0 Payne Landing Access on left.
463.0 Tom Brown Access on left. Poor canoe/kayak access.
462.1 Nodaway Island Access on left.
460.0 Worrhwine Island Conservarion Area, left, begins. Fair canoe/kayak access.
456.2 Worrhwine Island CA ends.
453.3 Sun bridge Hills Conservarion Area, left, begins.
452.3 Sunbridge Hills CA ends.
450.4 French Barrom Access (St. Joseph) on left.
451.6 Arrhur Dupree Memorial Conservation Area, right, begins.
449.8 Arthur Dupree Memorial CA ends.
437.2 Jentell Brees Access on left.
391.3 Platte River, left. Schimmel City Access, 2.8 miles up Platte River.
363.0 Riverfront Park Access.
352.6 La Benite Park.
351.6 Liberty Bend Conservation Area, right, begins.
350.6 Liberty Bend CA ends.

Missouri Map III

342.0 Cooley Lake Conservation Area, left, begins.
341.8 Cooley Lake CA ends. Private land begins.
341.6 Private land ends, and Cooley Lake CA begins.
341.5 Cooley Lake CA access.
340.6 Cooley Lake CA ends. Private land begins.
340.2 Cooley Lake CA begins.
339.8 Cooley Lake CA ends.
339.5 Fort Osage Access.
334.0 Fishing River, left. Pigg’s Landing Access, 3.8 miles up Fishing River.
272.0 Grand Pass Conservation Area, right, begins.
266.0 Grand Pass CA ends.
263.0 Miami Access on right.

Missouri Map IV

263.0 Miami Access on right.
250.0 Grand River, left. Brunswick Access, 3.4 miles up Grand River.
239.1 Dalton Bottoms Access on left. Canoe/kayak must be carried down moderately steep rip rap bank. 227.3 Chariton River, left. Lewis Mill Access, 1.7 miles up Chariton Rivet.
226.2 Stump Island Patk Access (Glasgow) on left.
195.4 Franklin Island Conservation Atea, left, begins.
195.2 Franklin Island CA access.
192.0 Franklin Island CA ends.
190.1 Diana Bend Conservation Area, left, begins.
189.4 Diana Bend CA ends, and private land begins.
188.8 Diana Bend CA begins.
186.5 Diana Bend CA ends.
185.1 Taylor’s Landing Access on right, just before 1-70 Bridge.
185.0 Overton Bottoms Conservation Area, right, begins.
183.5 Rocheport Cave Conservation Area, left, begins.
182.8 Rocheport Cave CA ends.
177.9 Overton Bottoms CA ends.
177.6 Eagle Bluffs Conservation Area, left, begins. No ramp, but can access river by carrying boat over riprap near parking lot.
172.6 Plowboy Bend Conservation Atea on tight.
170.7 Eagle Bluffs CA ends.
170.6 Perche Cteek, left. Providence Access, 1.4 miles up Perche Creek.
168.3 Plowboy Bend CA ends. Private land begins.
167.6 Plowboy Bend CA begins.
166.3 Plowboy Bend CA ends.
164.0 Marion Bottoms Conservation Atea, tight, begins.
159.8 Hamburg Access on left.
158.0 Marion Bottoms CA ends. Access on tight.

Missouri Map V

148.2 Cedar Creek, left. Capitol View Access, 0.5 miles up Cedar Creek.
144.0 Noren Access Jefferson City on left.
138.3 Moreau River on right. Moreau 50 Access, 1.7 miles up Moreau River.
135.8 Smokey Waters Conservation Area, right, begins.
134.4 Smokey Waters CA ends, and private land begins.
133.9 Smokey Waters CA begins.
132.5 Smokey Waters CA ends, and private land begins.
132.0 Smokey Waters CA begins.
130.3 Smokey Waters CA ends.
130.2 Osage River, right. Bonnots Mill Access, 1.9 miles up Osage River.
124.6 Mokane Access on left.
117.9 Chamois Access on right.
112.9 Tate Island Conservation Area, left, begins.
110.6 Tate Island CA ends.
104.4 Gasconade River, right. Gasconade Park Access, 0.5 1 miles up Gasconade River.
97.6 Hermann Riverfront Park Access (Hermann) on right.
96.8 Loutre River, left. Loutre Lick Access, 2.4 miles up Loutre River. Easy canoe/kayak access by carrying boat down short path to river.
81.5 New Haven Access (New Haven) on right.

Missouri Map VI

77.8 Boeuf Creek, right. Colter’s Landing Access, 1.4 miles up Boeuf Creek.
68.0 Washington City Access (Washington).
55.0 Weldon Spring Conservation Area, left, begins.
54.4 Weldon Spring CA ends, and private land begins.
53.5 Weldon Spring CA, left, begins.
52.2 Weldon Spring CA ends, and private land begins.
49.8 Howell Island Conservation Area, right, begins.
49.4 Weldon Spring CA, left, begins.
49.1 Weldon Springs CA access on left.
44.8 Howell Island CA ends on right.
44.3 Weldon Spring Conservation Area ends on left.
29.8 Louis H. Bangert Memorial Wildlife Area, left, begins.
29.6 Bangert WA ends.
29.6 River Woods Conservation Area, right, begins. Poor canoe/kayak access.
28.2 River Woods CA ends.
27.8 Blanchette Landing Access, left, begins.
27.5 Blanchette Landing Access ends.
23.6 St. Stanislaus County Park, right, begins.
22.5 St. Stanislaus County Park ends.
16.3 Pelican Island Natural Area. right, begins. Access to river possible at Sioux Passage Park, but have to carry canoes/kayaks along trail to river.
10.5 Pelican Island NA ends.
4.8 Columbia Bottom Conservation Area, right, begins.
3.5 Columbia Bottom CA access.
0.0 Mississippi River and end of Columbia Bottom CA.


Types of Aids to Navigation

The term “aids to navigation” encompasses a wide range of floating and fixed objects (fixed meaning attached to the bottom or shore), and consist primarily of:

  • Buoys – floating objects that are anchored to the bottom. Their distinctive shapes and colors indicate their purpose and how to navigate around them.
  • Beacons – structures that are permanently fixed to the sea-bed or land. They range from structures such as light houses, to single-pile poles. Most beacons have lateral or non-lateral aids attached to them. Lighted beacons are called “LIGHTS”, unlighted beacons are “DAYBEACONS”.

Both Buoys and Beacons may have lights attached, and may have a sound making device such as a gong, bell or horn. Both Buoys and Beacons may be called “marks”.

Caution: Do not count on floating aids to always maintain their precise charted positions, or unerringly display their characteristics. The Coast Guard works constantly to keep aids on station and functioning properly, but obstacles to perfect performance are so great that complete reliability is impossible. Only use floating aids for use as a navigation fix when you cannot see a fixed point of reference.

Aids to Navigation Systems

Depending on where you boat in America, you may see several differences in how navigational marks are colored, numbered, or lighted. Regardless of the location, buoys and beacons are placed in very specific locations, to mark either a particular side of a waterway, or some other navigational feature. The primary system in use is referred to the “U.S. Aids to Navigation System”. The U. S. Coast Guard maintains this system in conformance to the International Association of Lighthouse Authorities (IALA), which is an international committee which seeks to ensure safe navigation, primarily through the use of common navigation aids and signals.

The “LATERAL” system is the familiar RED RIGHT RETURNING system, meaning that on all navigable waters returning from sea, the red even-numbered marks are on the starboard (right) side of the channel and the green odd-numbered marks are on the port (left) side of the channel. Numbers on the marks ascend when traveling from sea to harbor–if you don’t have a compass and become disoriented on the water, you will always know you are heading upstream if the buoy numbers get larger as you travel.

Port Side Odd Numbered Aids

Port side numbered aids are green in color, odd numbered and may be lighted. Port side marks are located on the left side of the waterway as you travel upstream, and the buoy numbers will increase as you head upstream. (Chart depictions are shown next to the marks) Port-Side Buoys have a cylindrical above-water appearance, like a can or drum floating on its axis. Commonly referred to as “CAN” buoys. Beacons – Port side beacons have square marks attached to them, with two shades of color and a reflective border.

the green portside navigation aids the green portside navigation aids the green portside navigation aids the green portside navigation aids

Starboard Side Odd Numbered Aids

Starboard aids are red in color, evenly numbered and will be on your right side as you travel upstream. Buoy numbers increase as you head upstream, and may have a red light. Starboard-side buoys have an above-water appearance like that of a cylinder topped with a cone, pointed end up. The cone may come to a point or be slightly rounded. Commonly referred to as “NUN” buoys. Starboard-side Beacons have triangular marks attached to them, with two shades of color and a reflective border.

the red starboard side navigation aids the red starboard side navigation aids the red starboard side navigation aids the red starboard side navigation aids

Intracoastal Waterway

For the sea buoys that delineate channels off the coast of the United States, and for the Intracoastal Waterway (ICW), red is on the right (shore side) when proceeding clockwise around the U. S. from the East Coast to the Gulf Coast, or proceeding north along the West Coast.

ICW marks are further identified by a small yellow reflector at the bottom of the mark. The same port and starboard marks shown above will look like the following.

the ICW waterway markers the ICW waterway markers

Numbers on the marks ascend when traveling in this direction. Where the IALA-B and ICW marks meet, one must be very careful to observe the change in meaning by referral to local charts.

Other Aids – Marks


These diamond shaped marks are used to help the vessel operator determine location on a nautical map. When you see a dayboard, and find the corresponding mark on the chart, you know your precise location. They may be lettered, and may be lighted with a white light. Their color reflects that of nearby lateral marks.

three dayboards

Safe Water Marks

These marks are used to mark fairways, mid-channels, and offshore approach points. They have unobstructed water on all sides. These marks may be lettered, and may be lighted with a white light. They may also have a red top mark.

four safewater marks

Isolated Danger Marks

These indicate a danger which may be passed on all sides. They are erected on, or moored on or near danger. They should not be approached closely without special caution. They may be lighted, and they may be lettered.

four isolated danger marks, which are red and black

Special Marks

Special marks have no lateral significance (meaning they don’t tell you which side of the channel or river you may be on). These marks are used to mark a special feature or area. These include area limits for anchorages, fishing grounds, or dredging/spoil areas. These buoys may be lighted, and if they are it will be a fixed or flashing yellow light. Shape is optional, but usually follows the shape of the navigation buoys that it is positioned near.

four yellow special marks four yellow special marks four yellow special marks four yellow special marks

Other Aids – Miscellaneous

Mooring Bouys

Mooring buoys come in two different shapes; spherical and cylindrical. Both have white bodies with a solid blue horizontal band on the center of the buoy. Mooring buoys may have a white reflector, or a white light attached to them. Mooring buoys are the ONLY buoys to which you may legally tie your boat. Buoys are generally placed in marked anchorage areas, and you must take caution if you are traveling near buoy areas. Check your state boating guide for particular operating restrictions in anchorage areas.

a mooring buoy a mooring buoy


These are pairs of unlighted or lighted fixed aids that when observed in line show the pilot to be on the centerline of a channel.

chart showing range dayboards

Regulatory Marks

Regulatory Marks re designed to assist boaters by informing them of special restrictions or dangers that they are approaching. Regulatory marks are white “can” buoys that have an orange shape on them. The mark will give either a warning or instructions on how to proceed. The shape determines what type of mark it is.

  • An open diamond shape signifies danger.
  • A diamond with a cross in it signifies an exclusion area that you may not enter.
  • A circle indicates an upcoming operating restriction, such as a speed limit.
  • A square or rectangular shape is used for conveying instructions.

chart showing regulatory marks

Uniform State Waterway Marking System

This system was originally intended for use by states on lakes and inland waterways that weren’t covered by nautical charts. The buoys used in the Uniform State Waterway Marking System (USWMS) used colors, shapes and marking patterns that differed greatly from the U.S. Aids to Navigation System (ATONS).

In 1998, the U.S. Coast Guard decided to phase out the USWMS to avoid potential confusion of boaters and instead, favored using the more widely recognized ATONS. By 2003, the USWMS was completely phased out. Below are a few of the differences from the federal system you should know about.

Here’s a summary of the important changes regarding the phase out of USWMS:

  • The old USWMS black port side channel markers are now GREEN can buoys.
  • The old USWMS red starboard side channel markers are now red NUN buoys.
  • The old USWMS red and white vertically striped buoys have been replaced by one of the following: a red or green channel marker directing safe passage, an orange and white regulatory marker, or a red and black isolated danger marker.
  • The old USWMS white buoys topped with black or red bands, have been replaced by one of the following: a red or green channel marker directing safe passage, an orange and white regulatory marker, or a red and black isolated danger marker.

Lateral Aids

a black #3 lateral buoy

The state system differs in several ways, in case you happen to encounter them. These aids also assist mariners in making a safe landfall, mark isolated dangers, enable pilots to follow channels, and provide a continuous chain of charted marks for precise piloting in coastal waters. The U.S. Aids to Navigation System is intended for use with nautical charts, which provide valuable information regarding water depths, hazards, and other features that you will not find in an atlas or road map.

a red #4 lateral buoy

  • Buoys are placed in pairs, and you pass between them.
  • State buoys do use the color red for starboard side marks, but they are cans, and not nuns, while port buoys are black and can-shaped.
  • Numbers on buoys go up as you head upstream, or towards the head of navigation.
  • Portside buoys use the color black instead of green.
  • Portside buoys are numbered with odd numbers.
  • Portside buoys may show a green reflector or light.
  • Starboard side buoys are red.
  • Starboard side buoys are numbered with even numbers.
  • Starboard side buoys may show a red reflector or light.

Other State Aids

a red topped white buoy

Red-topped White Buoys

  • Signify that you may pass south or west of buoy
  • May be numbered
  • May show a white reflector or light

a Black-striped white Buoy

Black-striped white Buoys – Inland Waters Obstruction Mark

  • Signify that you should not pass between mark and nearest shore
  • May be lettered
  • May show white reflector or light
  • Replaces the old red and white vertically striped buoy

a Black-topped White Buoy

Black-topped White Buoys

  • Signify that you may pass east or north of buoy
  • May be nubered
  • May show white reflector or light
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