AQUAVEIN · BASIN RECORDS

Every basin's permitted line

98 California basins where the state has adopted a minimum groundwater threshold. Find your basin to see how deep the plan lets water fall before a response is required.

Find your basin

Depth is how far below ground the adopted plan allows water to fall, at the deepest representative site in that basin. A parcel report gives the figure for your address, not the basin.

Basin	Program	Deepest permitted level (ft)
6-012.01 Owens Valley	ADJ/GSP	3670
5-022.18 White Wolf	GSP	1073
5-022.14 Kern County	GSP	1031
4-008 Las Posas Valley	GSP	899
3-013 Cuyama Valley	GSP	731
1-052 Ukiah Valley	GSP	724
5-022.09 Westside	GSP	685
7-021.04 San Gorgonio Pass	GSP	674
5-022.13 Tule	GSP	646
5-022.10 Pleasant Valley	GSP	639
7-024.01 Borrego Springs	ALT	638
7-021.02 Mission Creek	ALT	617
9-007.01 Upper San Luis Rey Valley	GSP	601
8-004.01 Elsinore Valley	GSP	600
5-022.12 Tulare Lake	GSP	518
8-004.02 Bedford-Coldwater	GSP	505
4-004.06 Piru	GSP	502
8-002.07 Yucaipa	ADJ/GSP	480
5-022.07 Delta-Mendota	GSP	473
5-022.11 Kaweah	GSP	463
3-027 Santa Margarita	GSP	453
5-022.06 Madera	GSP	409
3-015 Santa Ynez River Valley	GSP	405
4-004.05 Fillmore	GSP	400
3-004.10 Monterey	ADJ/GSP	397
3-002.01 Pajaro Valley	ALT	391
3-001 Santa Cruz Mid-County	GSP	379
5-022.05 Chowchilla	GSP	376
5-022.04 Merced	GSP	374
7-021.01 Indio	ALT/GSP	373
6-054 Indian Wells Valley	GSP	371
5-022.15 Tracy	ALT/GSP	360
5-022.08 Kings	GSP	354
3-004.06 Paso Robles Area	GSP	349
4-006 Pleasant Valley	GSP	337
5-006.01 Bowman	GSP	330
8-005 San Jacinto	ADJ/GSP	327
3-004.02 East Side Aquifer	GSP	325
4-002 Ojai Valley	GSP	317
4-004.07 Santa Clara River Valley East	GSP	314
Unassigned in source (no basin name on record)	ADJ/ALT/GSP	302
4-007 Arroyo Santa Rosa Valley	GSP	300
5-029 Castac Lake Valley	GSP	295
5-021.52 Colusa	GSP	293
5-022.03 Turlock	GSP	289
5-004 Big Valley	GSP	288
3-018 Carpinteria	GSP	286
4-011.01 Santa Monica	GSP	280
4-004.03 Mound	GSP	280
5-021.56 Los Molinos	GSP	270
3-004.09 Langley Area	GSP	267
3-004.11 Atascadero Area	GSP	258
5-021.51 Corning	GSP	256
5-022.01 Eastern San Joaquin	GSP	245
8-002.09 Temescal	GSP	239
3-014 San Antonio Creek Valley	GSP	238
2-010 Livermore Valley	ALT	226
2-002.02 Sonoma Valley	GSP	225
5-021.65 South American	GSP	223
5-022.02 Modesto	GSP	218
5-021.57 Vina	GSP	210
3-049 Montecito	GSP	207
1-055.01 Santa Rosa Plain	GSP	200
3-004.04 Forebay Aquifer	GSP	200
5-022.16 Cosumnes	GSP	195
4-013 San Gabriel Valley	ADJ/GSP	193
5-021.50 Red Bluff	GSP	190
3-003.05 North San Benito	GSP	184
5-021.69 Wyandotte Creek	GSP	183
5-021.64 North American	GSP	179
5-021.67 Yolo	GSP	177
3-009 San Luis Obispo Valley	GSP	173
1-004 Shasta Valley	GSP	166
3-004.01 180/400 Foot Aquifer	GSP	166
5-006.03 Anderson	GSP	162
5-012.01 Sierra Valley	GSP	161
5-006.04 Enterprise	GSP	158
9-010 San Pasqual Valley	GSP	151
1-003 Butte Valley	GSP	145
3-004.05 Upper Valley Aquifer	GSP	134
5-021.61 South Yuba	GSP	131
4-004.02 Oxnard	GSP	129
2-002.01 Napa Valley	GSP	126
1-002.01 Tulelake	GSP	120
5-022.19 East Contra Costa	GSP	119
2-001 Petaluma Valley	GSP	119
2-009.04 East Bay Plain	GSP	117
4-003.01 Upper Ventura River	GSP	109
5-021.70 Butte	ADJ/GSP	107
5-015 Big Valley	GSP	100
5-021.62 Sutter	GSP	90
1-005 Scott River Valley	GSP	89
5-021.66 Solano	GSP	87
5-021.60 North Yuba	GSP	80
5-012.02 Chilcoot	GSP	56
1-010 Eel River Valley	GSP	51
8-002.08 San Timoteo, 8-002.07 Yucaipa	GSP	38
6-012.02 Fish Slough	GSP	29

AQUAVEIN · PARCEL-LEVEL GROUNDWATER DUE DILIGENCE · NOT A TITLE PRODUCT OR TITLE INSURANCE · SOURCES: STATE WELL-COMPLETION RECORDS · STATE GROUNDWATER-LEVEL NETWORK · STATE PLAN DATA · ARIZONA WELL DATA · SATELLITE GRAVIMETRIC MONITORING · METHODOLOGY PUBLISHED · WE GRADE "STABLE" WHEN THE DATA SAYS STABLE · PAGE GENERATED 2026-07-15
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