Tool Box
Bulletin 118 Groundwater Basin Descriptions

This is an IWRIS tool that allows the user easy access to groundwater basin description available in DWR Bulletin 118. You can click on the link below to download all the pdf files of the basin descriptions as a zip file or you can download the individual pdf files for a selected basin by right clicking on the links below.

Please note that the zip file is being created on the fly using the latest pdf files on the DWR Bulletin 118 website. Therefore, it may few minutes to create the zip file and download it.

You can sort the list below by clicking on the "Subbasin No." and "Subbasin Name" links.

Download all basin descriptions in one zip file (25.4 MB)
Note for the zip file(1.2 KB)

Download individual PDF files
Subbasin NoSubbasin Name
1-1SMITH RIVER PLAIN
1-10EEL RIVER VALLEY
1-11COVELO ROUND VALLEY
1-12LAYTONVILLE VALLEY
1-13LITTLE LAKE VALLEY
1-14LOWER KLAMATH RIVER VALLEY
1-15HAPPY CAMP TOWN AREA
1-16SEIAD VALLEY
1-17BRAY TOWN AREA
1-18RED ROCK VALLEY
1-19ANDERSON VALLEY
1-2KLAMATH RIVER VALLEY
1-2.01TULE LAKE
1-2.02LOWER KLAMATH
1-20GARCIA RIVER VALLEY
1-21FORT BRAGG TERRACE AREA
1-22FAIRCHILD SWAMP VALLEY
1-25PRAIRIE CREEK AREA
1-26REDWOOD CREEK AREA
1-27BIG LAGOON AREA
1-28MATTOLE RIVER VALLEY
1-29HONEYDEW TOWN AREA
1-3BUTTE VALLEY
1-30PEPPERWOOD TOWN AREA
1-31WEOTT TOWN AREA
1-32GARBERVILLE TOWN AREA
1-33LARABEE VALLEY
1-34DINSMORES TOWN AREA
1-35HYAMPOM VALLEY
1-36HETTENSHAW VALLEY
1-37COTTONEVA CREEK VALLEY
1-38LOWER LAYTONVILLE VALLEY
1-39BRANSCOMB TOWN AREA
1-4SHASTA VALLEY
1-40TEN MILE RIVER VALLEY
1-41LITTLE VALLEY
1-42SHERWOOD VALLEY
1-43WILLIAMS VALLEY
1-44EDEN VALLEY
1-45BIG RIVER VALLEY
1-46NAVARRO RIVER VALLEY
1-48GRAVELLEY VALLEY
1-49ANAPOLIS OHLSON RANCH FORMATION HIGHLANDS
1-5SCOTT RIVER VALLEY
1-50KNIGHTS VALLEY
1-51POTTER VALLEY
1-52UKIAH VALLEY
1-53SANEL VALLEY
1-54ALEXANDER VALLEY
1-54.01ALEXANDER AREA
1-54.02CLOVERDALE AREA
1-55SANTA ROSA VALLEY
1-55.01SANTA ROSA PLAIN
1-55.02HEALDSBURG AREA
1-55.03RINCON VALLEY
1-56McDOWELL VALLEY
1-57BODEGA BAY AREA
1-59WILSON GROVE FORMATION HIGHLANDS
1-6HAYFORK VALLEY
1-60LOWER RUSSIAN RIVER VALLEY
1-61FORT ROSS TERRACE DEPOSITS
1-62WILSON POINT AREA
1-7HOOPA VALLEY
1-8MAD RIVER VALLEY
1-8.01MAD RIVER LOWLAND
1-8.02DOWS PRAIRIE SCHOOL AREA
1-9EUREKA PLAIN
2-1PETALUMA VALLEY
2-10LIVERMORE VALLEY
2-11SUNOL VALLEY
2-19KENWOOD VALLEY
2-2NAPA-SONOMA VALLEY
2-2.01NAPA VALLEY
2-2.02SONOMA VALLEY
2-2.03NAPA-SONOMA LOWLANDS
2-22HALF MOON BAY TERRACE
2-24SAN GREGORIO VALLEY
2-26PESCADERO VALLEY
2-27SAND POINT AREA
2-28ROSS VALLEY
2-29SAN RAFAEL VALLEY
2-3SUISUN-FAIRFIELD VALLEY
2-30NOVATO VALLEY
2-31ARROYO DEL HAMBRE VALLEY
2-32VISITATION VALLEY
2-33ISLAIS VALLEY
2-35MERCED VALLEY
2-36SAN PEDRO VALLEY
2-37SOUTH SAN FRANCISCO
2-38LOBOS
2-39MARINA
2-4PITTSBURG PLAIN
2-40DOWNTOWN SAN FRANCISCO
2-5CLAYTON VALLEY
2-6YGNACIO VALLEY
2-7SAN RAMON VALLEY
2-8CASTRO VALLEY
2-9SANTA CLARA VALLEY
2-9.01NILES CONE SUBBASIN
2-9.02SANTA CLARA SUBBASIN
2-9.03SAN MATEO PLAIN SUBBASIN
2-9.04EAST BAY PLAIN
3-1SOQUEL VALLEY
3-12SANTA
3-13CUYAMA VALLEY
3-14SAN ANTONIO CREEK VALLEY
3-15SANTA YNEZ RIVER VALLEY
3-16GOLETA
3-17SANTA BARBARA
3-18CARPINTERIA
3-19CARRIZO PLAIN
3-2PAJARO VALLEY
3-20ANO NUEVO AREA
3-21SANTA CRUZ PURISIMA FORMATION
3-22SANTA ANA VALLEY
3-23UPPER SANTA ANA VALLEY
3-24QUIEN SABE VALLEY
3-25TRES PINOS VALLEY
3-26WEST SANTA CRUZ TERRACE
3-27SCOTTS VALLEY
3-28SAN BENITO RIVER VALLEY
3-29DRY LAKE VALLEY
3-3GILROY-HOLLISTER VALLEY
3-3.01LLAGAS SUBBASIN
3-3.02BOSLA AREA
3-3.03HOLLISTER AREA SUBBASIN
3-3.04SAN JUAN BAUTISTA AREA SUBBASIN
3-30BITTER WATER VALLEY
3-31HERNANDEZ VALLEY
3-32PEACH TREE VALLEY
3-33SAN CARPOFORO VALLEY
3-34ARROYO DE LA CRUZ VALLEY
3-35SAN SIMEON VALLEY
3-36SANTA ROSA VALLEY
3-37VILLA VALLEY
3-38CAYUCOS VALLEY
3-39OLD VALLEY
3-4SALINAS VALLEY
3-4.01180/400 Foor Aquifer
3-4.02East Side Aquifer
3-4.04Forebay Aquifer
3-4.05Upper Valley Aquifer
3-4.06Paso Robles Area
3-4.08Seaside Area
3-4.09Langley Area
3-4.10Corral de Tierra Area
3-40TORO VALLEY
3-41MORRO VALLEY
3-42CHORRO VALLEY
3-43RINCONADA VALLEY
3-44POZO VALLEY
3-45HUASNA VALLEY
3-46RAFAEL VALLEY
3-47BIG SPRING AREA
3-49MONTECITO
3-5CHOLAME VALLEY
3-50FELTON AREA
3-51MAJORS CREEK
3-52NEEDLE ROCK POINT
3-53FOOTHILL
3-6LOCKWOOD VALLEY
3-7CARMEL VALLEY
3-8LOS OSOS VALLEY
3-9SAN LUIS OBISPO VALLEY
4-1UPPER OJAI VALLEY
4-10CONEJO VALLEY
4-11COASTAL PLAIN OF LOS ANGELES
4-11.01SANTA MONICA
4-11.02HOLLYWOOD
4-11.03WEST COAST SUBBASIN
4-11.04CENTRAL SUBBASIN
4-12SAN FERNANDO VALLEY
4-13SAN GABRIEL VALLEY
4-15TIERRA REJADA
4-16HIDDEN VALLEY
4-17LOCKWOOD VALLEY
4-18HUNGRY VALLEY
4-19THOUSAND OAKS AREA
4-2OJAI VALLEY
4-20RUSSELL VALLEY
4-22MALIBU VALLEY
4-23RAYMOND
4-3VENTURA RIVER VALLEY
4-3.01UPPER VENTURA RIVER
4-3.02LOWER VENTURA RIVER
4-4SANTA CLARA RIVER VALLEY
4-4.02OXNARD SUBBASIN
4-4.03MOUND SUBBASIN
4-4.04SANTA PAULA SUBBASIN
4-4.05FILLMORE SUBBASIN
4-4.06PIRU SUBBASIN
4-4.07SANTA CLARA EAST SUBBASIN
4-5ACTON VALLEY
4-6PLEASANT VALLEY
4-7ARROYO SANTA ROSA VALLEY
4-8LAS POSAS VALLEY
4-9SIMI VALLEY
5-1GOOSE LAKE VALLEY
5-1.01LOWER GOOSE LAKE VALLEY
5-1.02FANDANGO VALLEY
5-10AMERICAN VALLEY
5-11MOHAWK VALLEY
5-12SIERRA VALLEY
5-12.01SIERRA VALLEY
5-12.02CHILCOOT
5-13UPPER LAKE VALLEY
5-14SCOTTS VALLEY
5-15KELSEYVILLE VALLEY
5-16HIGH VALLEY
5-17BURNS VALLEY
5-18COYOTE VALLEY
5-19COLLAYOMI VALLEY
5-2ALTURAS AREA
5-2.01SOUTH FORK PITT RIVER
5-2.02WARM SPRINGS VALLEY
5-20BERRYESSA VALLEY
5-21SACRAMENTO VALLEY
5-21.50RED BLUFF SUBBASIN
5-21.51CORNING SUBBASIN
5-21.52COLUSA SUBBASIN
5-21.53BEND SUBBASIN
5-21.54ANTELOPE SUBBASIN
5-21.55DYE CREEK SUBBASIN
5-21.56LOS MOLINOS SUBBASIN
5-21.57VINA SUBBASIN
5-21.58WEST BUTTE SUBBASIN
5-21.59EAST BUTTE SUBBASIN
5-21.60NORTH YUBA SUBBASIN
5-21.61SOUTH YUBA SUBBASIN
5-21.62SUTTER SUBBASIN
5-21.64NORTH AMERICAN SUBBASIN
5-21.65SOUTH AMERICAN SUBBASIN
5-21.66SOLANO SUBBASIN
5-21.67Yolo Subbasin
5-21.68CAPAY VALLEY SUBBASIN
5-22SAN JOAQUIN VALLEY
5-22.01EAST SAN JOAQUIN SUBBASIN
5-22.02MODESTO SUBBASIN
5-22.03TURLOCK SUBBASIN
5-22.04MERCED
5-22.05CHOWCHILLA SUBBASIN
5-22.06MADERA SUBBASIN
5-22.07DELTA-MENDOTA SUBBASIN
5-22.08KINGS SUBBASIN
5-22.09WESTSIDE SUBBASIN
5-22.10PLEASANT VALLEY SUBBASIN
5-22.11KAWEAH SUBBASIN
5-22.12TULARE LAKE SUBBASIN
5-22.13TULE SUBBASIN
5-22.14KERN COUNTY SUBBASIN
5-22.15TRACY SUBBASIN
5-22.16COSUMNES SUBBASIN
5-23PANOCHE VALLEY
5-25KERN RIVER VALLEY
5-26WALKER BASIN CREEK VALLEY
5-27CUMMINGS VALLEY
5-28TEHACHAPI VALLEY WEST
5-29CASTAC LAKE VALLEY
5-3JESS VALLEY
5-30LOWER LAKE VALLEY
5-31LONG VALLEY
5-35MCCLOUD AREA
5-36ROUND VALLEY
5-37TOAD WELL AREA
5-38PONDOSA TOWN AREA
5-4BIG Valley Basin
5-40HOT SPRINGS VALLEY
5-41EGG LAKE VALLEY
5-43ROCK PRAIRIE VALLEY
5-44LONG VALLEY
5-45CAYTON VALLEY
5-46LAKE BRITTON AREA
5-47GOOSE VALLEY
5-48BURNEY CREEK VALLEY
5-49DRY BURNEY CREEK VALLEY
5-5FALL RIVER VALLEY
5-50NORTH FORK BATTLE CREEK
5-51BUTTE CREEK VALLEY
5-52GRAY VALLEY
5-53DIXIE VALLEY
5-54ASH VALLEY
5-56YELLOW CREEK VALLEY
5-57LAST CHANCE CREEK VALLEY
5-58CLOVER VALLEY
5-59GRIZZLY VALLEY
5-6REDDING AREA
5-6.01BOWMAN SUBBASIN
5-6.02ROSEWOOD SUBBASIN
5-6.03ANDERSON SUBBASIN
5-6.04ENTERPRISE SUBBASIN
5-6.05MILLVILLE SUBBASIN
5-6.06SOUTH BATTLE CREEK SUBBASIN
5-60HUMBUG VALLEY
5-61CHROME TOWN AREA
5-62ELK CREEK AREA
5-63STONYFORD TOWN AREA
5-64BEAR VALLEY
5-65LITTLE INDIAN VALLEY
5-66CLEAR LAKE CACHE FORMATION
5-68POPE VALLEY
5-69YOSEMITE VALLEY
5-7LAKE ALMANOR VALLEY
5-70LOS BANOS CREEK VALLEY
5-71VALLECITOS CREEK VALLEY
5-8MOUNTAIN MEADOWS VALLEY
5-80BRITE VALLEY
5-82CUDDY CANYON VALLEY
5-83CUDDY RANCH AREA
5-84CUDDY VALLEY
5-85MIL POTRERO AREA
5-86JOSEPH CREEK
5-87MIDDLE FORK FEATHER RIVER
5-88STONY GORGE RESERVOIR
5-89SQUAW FLAT
5-9INDIAN VALLEY
5-90FUNKS CREEK
5-91ANTELOPE CREEK
5-92BLANCHARD VALLEY
5-93NORTH FORK CACHE CREEK
5-94MIDDLE CREEK
5-95MEADOW VALLEY
6-1SURPRISE VALLEY
6-10ADOBE LAKE VALLEY
6-100SECRET VALLEY
6-101BULL FLAT
6-104LONG VALLEY
6-105SLINKARD VALLEY
6-106LITTLE ANTELOPE VALLEY
6-107SWEETWATER FLAT
6-108OLYMPIC VALLEY
6-11LONG VALLEY
6-12OWENS VALLEY
6-13BLACK SPRINGS VALLEY
6-14FISH LAKE VALLEY
6-15DEEP SPRINGS VALLEY
6-16EUREKA VALLEY
6-17SALINE VALLEY
6-18DEATH VALLEY
6-19WINGATE VALLEY
6-2MADELINE PLAINS
6-20MIDDLE AMARGOSA VALLEY
6-21LOWER KINGSTON VALLEY
6-22UPPER KINGSTON VALLEY
6-23RIGGS VALLEY
6-24RED PASS VALLEY
6-25BICYCLE VALLEY
6-26AVAWATZ VALLEY
6-27LEACH VALLEY
6-28PAHRUMP VALLEY
6-29MESQUITE VALLEY
6-3WILLOW CREEK VALLEY
6-30IVANPAH VALLEY
6-31KELSO VALLEY
6-32BROADWELL VALLEY
6-33SODA LAKE VALLEY
6-34SILVER LAKE VALLEY
6-35CRONISE VALLEY
6-36LANGFORD VALLEY
6-36.01LANGFORD WELL LAKE
6-36.02IRWIN
6-37COYOTE LAKE VALLEY
6-38CAVES CANYON VALLEY
6-4HONEY LAKE VALLEY
6-40LOWER MOJAVE RIVER VALLEY
6-41MIDDLE MOJAVE RIVER VALLEY
6-42UPPER MOJAVE RIVER VALLEY
6-43EL MIRAGE VALLEY
6-44ANTELOPE VALLEY
6-45TEHACHAPI VALLEY EAST
6-46FREMONT VALLEY
6-47HARPER VALLEY
6-48GOLDSTONE VALLEY
6-49SUPERIOR VALLEY
6-5TAHOE VALLEY
6-5.01TAHOE VALLEY SOUTH
6-5.02TAHOE VALLEY WEST
6-5.03TAHOE VALLEY NORTH
6-50CUDDEBACK VALLEY
6-51PILOT KNOB VALLEY
6-52SEARLES VALLEY
6-53SALT WELLS VALLEY
6-54INDIAN WELLS VALLEY
6-55COSO VALLEY
6-56ROSE VALLEY
6-57DARWIN VALLEY
6-58PANAMINT VALLEY
6-6CARSON VALLEY
6-61CAMEO AREA
6-62RACE TRACK VALLEY
6-63HIDDEN VALLEY
6-64MARBLE CANYON AREA
6-65COTTONWOOD SPRING AREA
6-66LEE FLAT
6-67MARTIS (TRUCKEE) VALLEY
6-68SANTA ROSA FLAT
6-69KELSO LANDER VALLEY
6-7ANTELOPE VALLEY
6-70CACTUS FLAT
6-71LOST LAKE VALLEY
6-72COLES FLAT
6-73WILD HORSE MESA AREA
6-74HARRISBURG FLATS
6-75WILDROSE CANYON
6-76BROWN MOUNTAIN VALLEY
6-77GRASS VALLEY
6-78DENNING SPRING VALLEY
6-79CALIFORNIA VALLEY
6-8BRIDGEPORT VALLEY
6-80MIDDLE PARK CANYON
6-81BUTTE VALLEY
6-82SPRING CANYON VALLEY
6-84GREENWATER VALLEY
6-85GOLD VALLEY
6-86RHODES HILL AREA
6-88OWL LAKE VALLEY
6-89KANE WASH AREA
6-9MONO VALLEY
6-90CADY FAULT AREA
6-91COW HEAD LAKE VALLEY
6-92PINE CREEK VALLEY
6-93HARVEY VALLEY
6-94GRASSHOPPER VALLEY
6-95DRY VALLEY
6-96EAGLE LAKE AREA
6-97HORSE LAKE VALLEY
6-98TULEDAD CANYON
6-99PAINTERS FLAT
7-1LANFAIR VALLEY
7-10TWENTYNINE PALMS VALLEY
7-11COPPER MOUNTAIN VALLEY
7-12WARREN VALLEY
7-13DEADMAN VALLEY
7-13.01DEADMAN LAKE
7-13.02SURPRISE SPRING
7-14LAVIC VALLEY
7-15BESSEMER VALLEY
7-16AMES VALLEY
7-17MEANS VALLEY
7-18JOHNSON VALLEY AREA
7-18.01SOGGY LAKE
7-18.02UPPER JOHNSON VALLEY
7-19LUCERNE VALLEY
7-2FENNER VALLEY
7-20MORONGO VALLEY
7-21COACHELLA VALLEY
7-21.01INDIO
7-21.02MISSION CREEK
7-21.03DESERT HOT SPRINGS
7-21.04SAN GORGONIO PASS
7-22WEST SALTON SEA
7-24BORREGO VALLEY
7-25OCOTILLO-CLARK VALLEY
7-26TERWILLIGER VALLEY
7-27SAN FELIPE VALLEY
7-28VALLECITO-CARRIZO VALLEY
7-29COYOTE WELLS VALLEY
7-3WARD VALLEY
7-30IMPERIAL VALLEY
7-31OROCOPIA VALLEY
7-32CHOCOLATE VALLEY
7-33EAST SALTON SEA
7-34AMOS VALLEY
7-35OGILBY VALLEY
7-36YUMA VALLEY
7-37ARROYO SECO VALLEY
7-38PALO VERDE VALLEY
7-39PALO VERDE MESA
7-4RICE VALLEY
7-40QUIEN SABE POINT VALLEY
7-41CALZONA VALLEY
7-42VIDAL VALLEY
7-43CHEMEHUEVI VALLEY
7-44NEEDLES VALLEY
7-45PIUTE VALLEY
7-46CANEBRAKE VALLEY
7-47JACUMBA VALLEY
7-48HELENDALE FAULT VALLEY
7-49PIPES CANYON FAULT VALLEY
7-5CHUCKWALLA VALLEY
7-50IRON RIDGE AREA
7-51LOST HORSE VALLEY
7-52PLEASANT VALLEY
7-53HEXIE MOUNTAIN AREA
7-54BUCK RIDGE FAULT VALLEY
7-55COLLINS VALLEY
7-56YAQUI WELL AREA
7-59MASON VALLEY
7-6PINTO VALLEY
7-61DAVIES VALLEY
7-62JOSHUA TREE
7-63VANDEVENTER FLAT
7-7CADIZ VALLEY
7-8BRISTOL VALLEY
7-9DALE VALLEY
8-1COASTAL PLAIN OF ORANGE COUNTY
8-2UPPER SANTA ANA VALLEY
8-2.01CHINO
8-2.02CUCAMONGA
8-2.03RIVERSIDE-ARLINGTON
8-2.04RIALTO-COLTON
8-2.05CAJON
8-2.06BUNKER HIL
8-2.07YUCAIPA
8-2.08SAN TIMOTEO
8-2.09TEMESCAL
8-4ELSINORE
8-5SAN JACINTO
8-6HEMET LAKE VALLEY
8-7BIG MEADOWS VALLEY
8-8SEVEN OAKS VALLEY
8-9BEAR VALLEY
9-1SAN JUAN VALLEY
9-10SAN PASQUAL VALLEY
9-11SANTA MARIA VALLEY
9-12SAN DIEGUITO CREEK
9-13POWAY VALLEY
9-14MISSION VALLEY
9-15SAN DIEGO RIVER VALLEY
9-16EL CAJON VALLEY
9-17SWEETWATER VALLEY
9-18OTAY VALLEY
9-19TIJUANA BASIN
9-2SAN MATEO VALLEY
9-22BATIQUITOS LAGOON VALLEY
9-23SAN ELIJO VALLEY
9-24PAMO VALLEY
9-25RANCHITA TOWN AREA
9-27COTTONWOOD VALLEY
9-28CAMPO VALLEY
9-29POTRERO VALLEY
9-3SAN ONOFRE VALLEY
9-32SAN MARCOS AREA
9-4SANTA MARGARITA VALLEY
9-5TEMECULA VALLEY
9-6COAHUILA VALLEY
9-7SAN LUIS REY VALLEY
9-8WARNER VALLEY
9-9ESCONDIDO VALLEY