The map, and information about the scheduling of Riverfest events, were supplied by the District Recreation Department. For more information call 673-7660, which officials say will be manned all weekend. And, they say, "the whole waterfront will be wired, with constant public-address announcements and narrations of events." SATURDAY

9 A.M. -- 5K FUN RUN (3.1 miles) starts at Ninth and Water streets. Registration Friday from 9 to 5 at 3149 16th St. NW; or at 8 a.m. at race site. Fee of $7 includes T-shirt. The route will be along the waterfront through the Southwest redevelopment area, and back to the beginning.

10:30 A.M. -- AYEE CALYPSO! Jacques Cousteau's famous ocean research vessel arrives in Washington Channel, led by Washington fireboat John Glenn and escorted by ships tall and small.

11 A.M. -- KUDOS COUSTEAU! D.C. Mayor Marion Barry Jr. welcomes Captain Cousteau and officially opens Riverfest '85 at the Municipal Pier, 550 Water Street. Noise and color will be provided by, among others, the Joint Services Color Guard; the Fife & Drum Corps of the 3d U.S. Infantry ("The Old Guard"); and the U.S. Air Force Ceremonial Band. Also, the tour boat Ellena begins free half-hour harbor cruises from the Gangplank Marina dock.

11:30 A.M. -- SAILING, SAILING. The Potomac River Sailing Association's Riverfest Regatta commences off Hains Point, whilst the Annapolis Board Sailing Club's Sailboard Regatta begins off West Potomac Park. Meanwhile, upriver at Fletcher's Boat House (off Canal Road above Georgetown), the American Rivers Conservation Council launches the Potomac Paddle-Thon, in which river-lover-sponsored river-lovers paddle miles, or miles and miles, or miles and miles and miles, downriver and back to raise money for the council.

NOON -- MUSIC & MEMORIES. While two local-favorite bands sound off outside, the Potomac River Heritage program opens its tent show on the waterfront by the Barley Mow Restaurant.

The music: Etc. Unlimited at Stage II (Seventh & Water) and the Barry Farms Junk Yard Band at Stage IV (Water Street Circle).

The exhibits:

* Enlargements of photographs from historian Frederick Tilp's fascinating book, "This Was Potomac River," not having read which, you don't know from nothin' about River City's river.

* Early illustrations of life and times along the "Patowomeck," as the early explorers rendered the river's Indian name, from "The City of Washington," the wonderful illustrated history produced by the Junior League of Washington.

* Old photos of the Washington Navy Yard, great arsenal of the U.S. fleet from the Civil War through World War II. (There'll also be shuttle buses to the splendid Navy Yard Museum from Seventh and Maine, hours 11 to 5).

* The Joe Owens Curtis collection of photos of Southwest Washington.

The tent will be open until 4:30 Saturday and 1 to 5 Sunday.

1 P.M. -- POUND, PATTER, PRANCE & PADDLE. Music by the Trinidad Steel Band at Stage I (Ninth & Water) and by the U.S. Air Force Airmen of Note at Stage III (Sixth & Water); comedian Sylvia Traymore at Stage II; D.C. Youth Ensemble, a rec department dance group, at Stage IV; a boating demonstration by the Washington Canoe Club, off Restaurant Row; and a sailing demonstration by the Gangplank Marina Sailing School.

2:30 P.M. -- MUSIC, MUSIC, MUSIC. Metropolitan Police Jazz Band at Stage I; Radiant Band & Show (top 40) at Stage II; and local vocalists Michele Valeri & Ingrid Crepeau at Stage IV.

3 P.M. -- HELP! THANK YOU. You say the police helicopter water-rescue demonstration is nice, but you've seen it several times, ho-hum? Ha! They've got a new one, in which two drop rescuers rappel zzzit! 100 feet to the victim, then all three are snatched slooosh! from the water and dangle and drip high above the crowd while the pilot looks for a place to put 'em down. Meanwhile, Wilmer Tipton & Friends do rhythm and blues at Stage III.

3:30 P.M. -- ROW & SHOW. Potomac Boat Club oarsmen will propel their cockleshell craft along Washington Channel. Meanwhile, at Stage II, Willie Jolly and Joe Minor, trading as the Deuce Band & Show, will flog their instruments and their local-hit record, "Someone Else."

3:45 P.M. -- STAGE IV DISAPPEARS. Well, maybe not the stage, but at least a rabbit or something, as magician/juggler Kevin Lee does his numbers.

4 P.M. -- BARBERSHOP QUARTETTES. The Variations and A Joyful Noise, indigenous female barbershop singers, light up Stage I.

5 P.M. -- SING IT, WING IT, SLING IT. Julie Hall's jazz band at Stage II; the Pin Points, an improvisational theater group, brings its mirth and message to Stage IV; and Debra's Sweat Works does aerobic dance at tage IV.

5:30 P.M. -- FIDDLE DEE WHEE. The Footloose Cloggers and the Fiddlesticks stomp and scrape all over Stage I.

6:30 P.M. -- BILL HARRIS! Washington's wonderful blues guitarist brings his magic to Stage III; at Stage IV, the Strautus Band & Show's rhythm and blues.

7 P.M. -- SHAKE A LEG. The Dream Steppers step out on Stage I, while the Mighty Pop-A-Lots try to break down, um, break-dance down Stage II.

7:30 P.M. -- SING & SWEAT. Brenda Jones, our noted jazz singer and lyricist, takes Stage I; Debra's Sweat Works, cooled out from the 5 o'clock rock, takes Stage III.

8:30 P.M. -- BLUES IN THE NIGHT. The Fabulous Orioles Band & Show, "Memories," on Stage I; Mary Jefferson, "blues personified," on Stage III. SUNDAY

11 A.M. -- LITTLE BOATS, BIG WATER. Annapolis Board Sailing Club regatta off Hains Point; tour boat Ellena begins half-hour free cruises from Gangplank Marina dock.

1 P.M. -- SAILING, SINGING, SOUNDING. Potomac River Albacore Fleet regatta, Washington Channel; gospel singing by Tom Lewis & the Capitol Community Singers, Stage I; Etc. Unlimited, Stage II; Latin music by Macho Uno, Stage III; and Billie B entertains the youngsters at Stage IV.

1:30 P.M. -- THE GYMDANCE KIDS. Teen dancers Bren Carr (Brenda and Carmen) bring their blend of dance and gymnastics to Stage IV.

THE WAY WE WERE. A series of illustrated lectures in explanation and celebration of our river heritage, at the Disabled American Veterans headquarters building across Maine Avenue at Seventh Street, as follows:

* 2 p.m. "The Patawomack: The River of History," by Douglas Sprunt of Washington's Junior League, who knows whereof she speaks.

* 3 p.m. "The Early American Culture of the Potomac Valley," by anthropologist Beth Chambers.

* 4 p.m. "The History of the Canals in the District of Columbia," by Donald Spoon, professor of ecology at Georgetown University and author of "Development andthe C&O Canal."

In the lobby there will be a special photo exhibit for children, by the pupils of Amidon Elementary School.

2:30 P.M. -- SHAKE & BREAK. The Kingsmen quartet brings its dynamic gospel singing to Stage I; the Mighty Pop-A-Lots break it down on Stage II; and jazz vocalist Mary Blankmier graces Stage III.

3 P.M. HELP! HA HA. Here come the police again with another helicopter rescue demonstration in Washington Channel,while Sylvia Traymore makes funny on Stage II. And yonder, on Stage IV, is the Barry Farms Junk Yard Band.

3:30 P.M. -- ABOARD A BOARD. Sailboarding demonstration by PBI/Action Sports Center, Washington Channel.

4 P.M. -- JAZZ AND RAZMATAZZ. Lettum Play, Howard University's jazz ensemble, at Stage III; Austin Hart & the Flashback Band, Stage I; and the Radiant Band & Show, Stage II.

4:30 P.M. -- SEND IN THE CLOWN. Robbie Chafitz, who juggles when he isn't mugging, on Stage IV.

5 P.M. -- SHOWBOATING. When you've got it, flaunt it, as they say. Members of the various Potomac River yacht clubs will parade their craft up and down Washington Channel in a public-spirited attempt to inspire us to go get rich, too. Meanwhile the Blues Brothers, Fat Doctor and Kevin Lee take Stage I; and Julie Hall's jazz band has Stage II.

5:30 P.M. -- SONG & DANCE. Vocalist Kay Shalong brings her Billie Holiday repertoire to Stage III, while the Jan Taylor Dance Company takes Stage IV in a modern manner.

TRIBUTE TO MUDDY WATERS, no pun apparently intended. The National Park Service has lined up the late, great musician's band and side man Jimmy Rogers for a session on Stage I: it may go on and on, but the thing is scheduled to be laid down as follows:

* 6 p.m. The Rhythm Masters, Washington's own rhythm and blues quartet, featuring Cathy Ponton and Pat Day.

* 7:15 p.m. Jimmy Rogers and the Chicago Blues All-Stars. Guitarist Rogers helps us all recall how it was when the man he was beside was Muddy Waters.

8:30 p.m. The Legendary Blues Band, Grammy winners who toured and recorded with Waters. Pinetop Perkings on the boogie-woogie piano, Calvin Jones and Willie Smith making the rhythm, Jerry Portnoy on the blues harp (yes) and Peter Ward on guitar.

6:30 P.M. -- LISTEN UP. Ecoute, singers of all sorts of songs, and without music even, on Stage IV.

8 P.M. -- DEPARTMENTAL DITTIES. The Ambassadors, the Department of Recreation's top-40 musical ensemble featuring Margie Clark, take Stage III.

10 P.M.-- FIREWORKS! If you like fireworks, you love the Zambelli family, which has been lighting up our town for years. This one's going to be a no- fooling fireworks show, with the pyrotechnics launched from a barge moored right there under our noses in Washington Channel. It'll go on for half an hour and then we'll all go on home happier.

And remember, Metro's open till midnight Sunday.