Valley summary - by GSAs, subbasins

The numbers the map's panels show, every GSA on one page. Readings through Sep 2026; scenario: NOAA outlook for water year 2027, about 122% of normal precipitation (issued Oct 2026). Click a header to sort (blanks last), a name to open it on the map. Hover a header for what it counts.

GSAsSubbasinsDownload CSV
GSASubbasinStatusDepth now, ftSince 2015, ftScenario month 12, ftMonth 12 vs now, ftRMS below MT, nowRMS below MT, month 12RMS behind IM path, nowRMS behind IM path, month 12Plan rule, nowPlan rule, scenarioChance met, %Record lows, nowRecord lows, scenarioDomestic at risk, normal yearDomestic at risk, scenarioSubsidence 12 mo, ftRecharge soil near canal, acresStorage change, first spring, AFWells read, 12 moPer 100 sq mi80 % range at 12 mo, ft
County of Merced GSA - ChowchillaChowchillaCOD298.6+34.4290.1−8.5––––not metmet by Oct 2026100––0 of 10 of 1−0.117864800.012.9
Stewart Tract GSATracy–20.3+4.917.4−2.90 of 10 of 10 of 10 of 1not metnot met00 of 10 of 10 of 80 of 8−0.02381,411110.54.2
Wyandotte Creek GSAWyandotte Creek–54.5−0.651.7−2.80 of 90 of 91 of 91 of 9not metnot met00 of 150 of 1519 of 29318 of 2930.001,57922,0471516.24.5
County of Fresno GSA - Pleasant ValleyPleasant Valley–470.2+60.9449.6−20.60 of 60 of 53 of 53 of 5–cannot be computed–––0 of 110 of 11−0.0305,79900.093.4
El Rico GSATulare LakeCOD, Probation228.7−47.4214.4−14.30 of 80 of 8––not metnot met00 of 80 of 82 of 232 of 23–19731,812133.658.0
Madera Irrigation District GSAMaderaCOD229.7+58.3221.6−8.114 of 178 of 101 of 120 of 10metmet again by Oct 20261003 of 120 of 1269 of 48863 of 488−0.113,54418,401136.29.9
Rock Creek Reclamation District GSAVina–34.8−0.732.4−2.40 of 10 of 10 of 10 of 1not metnot met00 of 10 of 10 of 130 of 13+0.02031114.18.4
City of Dos Palos GSADelta-MendotaCOD17.9−16.716.2−1.73 of 1072 of 8812 of 904 of 88not metnot met0––––−0.09022400.06.6
Clay Water District GSACosumnes–183.6+21.5179.6−4.00 of 10 of 11 of 11 of 1not metnot met30 of 10 of 10 of 70 of 7−0.020152110.06.0
City of Lathrop GSATracy–17.0−0.814.4−2.60 of 50 of 41 of 50 of 4not metnot met00 of 60 of 60 of 110 of 11−0.0201,454759.34.2
Pioneer GSAKern CountyCOD137.8−119.1122.7−15.10 of 20 of 10 of 20 of 1not metnot met0––––−0.012,184272257.127.4
Central San Joaquin Water Conservation District GSAEastern San JoaquinCOD127.4+18.3125.2−2.20 of 30 of 32 of 32 of 3not metnot met00 of 40 of 41 of 2001 of 200−0.02014,52487.06.8
Glenn Groundwater Authority GSAColusa–89.8+26.285.3−4.50 of 210 of 185 of 192 of 18not metnot met03 of 1290 of 12998 of 90384 of 903−0.011,84162,07913428.14.7
City of Los Banos GSADelta-MendotaCOD41.6+15.636.4−5.20 of 20 of 10 of 10 of 1not metnot met00 of 10 of 10 of 60 of 6−0.05783,994222.06.8
Mid-Kings River GSATulare LakeCOD, Probation146.8+8.5136.5−10.30 of 230 of 91 of 3–not metnot met00 of 90 of 9101 of 67873 of 678−0.207,16736,4131912.513.1
City of Manteca GSAEastern San JoaquinCOD28.3+7.125.6−2.70 of 10 of 11 of 11 of 1not metnot met00 of 20 of 20 of 310 of 31−0.0301,96829.54.3
Linden County Water District GSAEastern San JoaquinCOD156.3+15.5155.3−1.0––––not metnot met0––0 of 10 of 1−0.0302500.015.8
Merced Subbasin GSAMercedCOD114.6+16.3111.6−3.01 of 71 of 60 of 50 of 5metmet again by Oct 20261000 of 221 of 226 of 4556 of 455−0.023,51875,018326.110.9
Corning Subbasin GSACorning–76.4+9.972.0−4.40 of 151 of 1512 of 1512 of 15metno longer met700 of 400 of 409 of 1609 of 1600.007483,4534158.39.2
Sutter Community Service District GSASutter–8.8−6.47.7−1.10 of 590 of 4918 of 5114 of 49not metnot met0––0 of 40 of 4−0.0104600.06.0
Sacramento Groundwater Authority GSANorth American–74.9−2.872.9−2.00 of 180 of 171 of 181 of 17not metnot met02 of 360 of 360 of 2710 of 271−0.012,3938,3893920.44.2
Sutter Extension Water District GSASutter–9.6+0.88.5−1.10 of 160 of 154 of 154 of 15not metnot met00 of 150 of 151 of 281 of 28−0.0101,9311533.14.7
Root Creek Water District GSAMaderaCOD221.9+27.4210.1−11.82 of 6–0 of 6–metmet again by Oct 2026100––0 of 40 of 4−0.1004,642960.422.9
City of Coalinga GSAPleasant Valley–428.6+60.0408.2−20.40 of 60 of 53 of 53 of 5–cannot be computed–2 of 20 of 21 of 11 of 1−0.0605,327230.348.4
City of Live Oak GSASutter–16.8+3.014.8−2.00 of 590 of 4918 of 5114 of 49not metnot met00 of 20 of 20 of 70 of 70.0001,082233.95.6
City of Stockton GSAEastern San JoaquinCOD31.2−6.030.9−0.30 of 30 of 30 of 30 of 3not metnot met00 of 40 of 40 of 710 of 71−0.02115-1,8482540.56.8
Lockeford Community Service District GSAEastern San JoaquinCOD148.2+14.6146.7−1.50 of 230 of 2011 of 219 of 19not metnot met0––0 of 20 of 2−0.020-26700.023.9
Banta-Carbona Irrigation District GSATracy–105.2+38.196.3−8.90 of 20 of 11 of 11 of 1not metnot met01 of 20 of 23 of 952 of 95−0.0106,3621142.58.1
City of Lodi GSAEastern San JoaquinCOD51.6−1.651.1−0.50 of 10 of 10 of 10 of 1not metnot met00 of 10 of 10 of 60 of 6−0.010-1,30620142.96.4
City of Tracy GSATracy–125.3+17.9118.3−7.01 of 41 of 43 of 42 of 4not metnot met00 of 190 of 190 of 350 of 35−0.01394,2352078.419.2
Merced Irrigation-Urban GSAMercedCOD97.9+6.795.1−2.87 of 236 of 181 of 180 of 18metmet again by Oct 20261005 of 330 of 3312 of 1,87511 of 1,875−0.0113,61225,2634015.710.1
Reclamation District No. 70 GSASutter–10.8−8.99.7−1.10 of 10 of 10 of 11 of 1not metnot met00 of 10 of 10 of 270 of 27−0.020-1,28113.28.1
North San Joaquin Water Conservation District GSAEastern San JoaquinCOD129.3−0.1129.1−0.20 of 30 of 33 of 32 of 3not metnot met01 of 90 of 91 of 6721 of 672−0.020-24,485125.222.7
Reclamation District No. 1660 GSASutter–8.8+0.86.0−2.80 of 50 of 41 of 40 of 4not metnot met00 of 40 of 40 of 10 of 1–378761417.74.2
Colusa Groundwater Authority GSA - ColusaColusa–65.6+16.262.7−2.90 of 270 of 208 of 206 of 20not metnot met00 of 790 of 7939 of 42438 of 424−0.022,380-124,1139214.116.6
Henry Miller Water District GSAKern CountyCOD101.4−46.797.2−4.20 of 5–0 of 5–not metnot met0––0 of 30 of 3−0.021,0341,477922.064.6
City of Yuba City GSASutter–20.3−2.619.8−0.50 of 30 of 20 of 20 of 2not metnot met00 of 20 of 20 of 100 of 10−0.010-167213.411.7
McMullin Area GSAKingsCOD173.0+2.5166.9−6.10 of 300 of 113 of 131 of 11not metnot met31 of 150 of 159 of 2386 of 238−0.081,71732,1662211.620.7
City of Firebaugh GSADelta-MendotaCOD54.9+12.549.1−5.80 of 1–––not metnot met0––––−0.1562369900.026.3
City of Gustine GSADelta-MendotaCOD32.6+18.627.4−5.20 of 10 of 10 of 10 of 1not metnot met0––0 of 10 of 1−0.010125171.418.4
Semitropic Water Storage District GSAKern CountyCOD260.5−4.0250.2−10.30 of 140 of 60 of 140 of 6not metnot met00 of 260 of 267 of 667 of 66−0.043,00647,9363710.612.9
Eastside San Joaquin GSAEastern San JoaquinCOD155.0+46.6155.8+0.80 of 10 of 1––not metnot met00 of 10 of 132 of 35532 of 355−0.01115-66,67831.517.4
Diablo Water District GSAEast Contra Costa–29.0−0.226.1−2.90 of 20 of 21 of 21 of 2not metnot met01 of 80 of 80 of 830 of 83−0.014,2194,928839.45.2
San Joaquin River Exchange Contractors GSADelta-MendotaCOD48.6+1.042.8−5.80 of 210 of 202 of 200 of 20not metnot met00 of 251 of 258 of 4288 of 428−0.066,303102,377379.35.2
James GSAKingsCOD141.0−1.6134.3−6.70 of 50 of 40 of 40 of 4not metnot met00 of 40 of 41 of 300 of 30−0.05012,331715.628.6
Buena Vista Water Storage District GSAKern CountyCOD144.2+6.2136.4−7.80 of 90 of 60 of 90 of 6not metnot met00 of 30 of 30 of 40 of 4−0.023176,79767.625.2
South Sutter Water District GSANorth American–42.4−9.941.0−1.40 of 50 of 55 of 55 of 5not metnot met00 of 240 of 242 of 812 of 81+0.0141618,1922423.28.3
County of Tuolumne GSAModesto–145.6+94.3––13 of 649 of 330 of 130 of 13not metmet by Sep 202760––––−0.020–00.019.0
DM-II GSADelta-MendotaCOD104.6−12.796.1−8.50 of 100 of 100 of 100 of 10not metnot met00 of 100 of 107 of 607 of 60−0.012,43517,4201213.828.4
North Fork Kings GSAKingsCOD187.7+1.5182.8−4.90 of 230 of 220 of 220 of 22not metnot met06 of 571 of 57101 of 489100 of 489−0.123,13350,1555922.518.2
Patterson Irrigation District GSADelta-MendotaCOD43.5−8.938.5−5.00 of 20 of 20 of 20 of 2not metnot met00 of 10 of 13 of 2073 of 207−0.014254,67714.212.9
Kings River East GSAKingsCOD69.0−0.561.6−7.40 of 230 of 235 of 234 of 23not metnot met00 of 180 of 1825 of 89124 of 891+0.0120,49369,870227.37.7
Greenfield County Water District GSAKern CountyCOD226.9+15.5216.3−10.60 of 10 of 10 of 10 of 1not metnot met00 of 10 of 11 of 11 of 1−0.03715406129.414.1
Aliso Water District GSADelta-MendotaCOD121.4+14.8108.7−12.70 of 70 of 30 of 40 of 3not metnot met00 of 30 of 30 of 20 of 2−0.153,8985,95949.723.1
Alpaugh GSATuleCOD, Probation242.0−71.3238.4−3.60 of 2–1 of 1––cannot be computed–––0 of 50 of 5−0.320-111417.667.1
Oro Loma Water District GSADelta-MendotaCOD102.0−57.597.3−4.73 of 1072 of 8812 of 904 of 88not metnot met0––0 of 10 of 1−0.04095900.040.0
Cawelo Water District GSAKern CountyCOD520.0+39.8511.9−8.10 of 6–2 of 5–not metnot met01 of 81 of 81 of 201 of 20−0.037,2869,5362121.426.3
Pleasant Valley GSAPleasant Valley–419.9+49.7402.0−17.90 of 60 of 53 of 53 of 5–cannot be computed–6 of 171 of 170 of 30 of 3−0.04019,0842342.334.1
Farmers Water District GSADelta-MendotaCOD100.8−1.381.1−19.70 of 40 of 42 of 40 of 4not metnot met01 of 20 of 2––−0.085072714114.336.1
Westlands Water District GSAWestsideCOD263.5−79.3245.0−18.51 of 651 of 501 of 471 of 41metmet again by Mar 20271000 of 521 of 520 of 240 of 240.0017,772230,809909.444.9
Gravelly Ford Water District GSAMaderaCOD146.1+3.9137.9−8.23 of 72 of 70 of 70 of 7metmet again by Oct 20261002 of 82 of 80 of 20 of 2−0.1502,524861.112.1
Madera Water District GSAMaderaCOD370.9+100.5367.7−3.22 of 32 of 30 of 30 of 3metmet again by Oct 20261002 of 30 of 31 of 101 of 10−0.0501,007351.717.0
County of Butte GSA - Butte 1Butte–22.2+0.120.3−1.90 of 160 of 164 of 162 of 16not metnot met00 of 220 of 221 of 361 of 360.003,5653,8022236.54.2
County of Butte GSA - Butte 2Butte–22.2+0.120.3−1.90 of 160 of 164 of 162 of 16not metnot met00 of 220 of 221 of 361 of 360.003,5653,8022236.54.2
Lower Tule River Irrigation District GSATuleCOD, Probation175.3+14.3164.4−10.92 of 131 of 33 of 121 of 3metmet again by Oct 20261002 of 30 of 34 of 854 of 85−0.291,53430,900127.335.1
East Kaweah GSAKaweahCOD84.7−6.778.2−6.54 of 392 of 226 of 293 of 22not metnot met00 of 200 of 2018 of 48413 of 484+0.0150812,5742815.221.1
Stockton East Water District GSAEastern San JoaquinCOD145.8+22.4145.1−0.70 of 20 of 11 of 20 of 1not metnot met00 of 100 of 101 of 5661 of 566−0.0309,8401811.510.5
Pixley Irrigation District GSATuleCOD, Probation250.8+59.6239.3−11.52 of 7–2 of 6––cannot be computed–0 of 20 of 227 of 15027 of 150−0.3113,9075,77687.330.4
City of Madera GSAMaderaCOD271.5+46.4260.9−10.64 of 42 of 21 of 20 of 2metmet again by Oct 20261000 of 20 of 26 of 326 of 32−0.220-3,477212.724.6
South Fork Kings GSATulare LakeCOD, Probation200.3−21.1187.7−12.63 of 223 of 214 of 54 of 5not metnot met00 of 170 of 1746 of 15444 of 154−0.1935312,3132320.722.5
Turner Island Water District GSA - MercedMercedCOD51.6−10.244.3−7.38 of 307 of 241 of 230 of 23metmet again by Oct 20261000 of 20 of 20 of 10 of 1–06,156210.216.6
Omochumne-Hartnell Water District GSA - CosumnesCosumnes–88.9−22.288.3−0.60 of 1–1 of 1–not metnot met3––0 of 360 of 36−0.0138-531320.811.3
City of Newman GSADelta-MendotaCOD53.3+16.242.3−11.01 of 21 of 21 of 21 of 2not metnot met0––0 of 50 of 5−0.0102462100.020.7
New Stone Water District GSAMaderaCOD153.4+48.7145.5−7.90 of 3–0 of 3–metmet again by Oct 2026100––0 of 30 of 3−0.2601,454460.610.5
Grasslands GSADelta-MendotaCOD42.1+15.238.9−3.20 of 60 of 51 of 51 of 5not metnot met00 of 10 of 10 of 230 of 23–46625,96043.45.6
City of Patterson GSADelta-MendotaCOD90.3−16.283.9−6.40 of 40 of 20 of 30 of 2not metnot met00 of 30 of 30 of 120 of 12−0.012311,110450.026.3
City of Mendota GSADelta-MendotaCOD118.0−22.8106.2−11.80 of 30 of 20 of 20 of 2not metnot met00 of 10 of 10 of 10 of 1−0.050580131.225.5
County of Fresno GSA - Delta-Mendota Management Area ADelta-MendotaCOD99.3−3.390.9−8.40 of 10 of 10 of 10 of 1not metnot met00 of 10 of 10 of 20 of 2−0.060642117.518.6
County of Fresno GSA - Delta-Mendota Management Area BDelta-MendotaCOD113.8+7.6100.1−13.71 of 41 of 43 of 42 of 4not metnot met00 of 10 of 13 of 113 of 11−0.054686,596515.321.4
County of Fresno GSA - WestsideWestsideCOD387.9−52.2363.5−24.41 of 651 of 501 of 471 of 41metmet again by Mar 2027100––––−0.02395,18700.042.3
County of Madera GSA - MaderaMaderaCOD276.5+78.2271.6−4.916 of 239 of 141 of 151 of 14metmet again by Oct 20261005 of 183 of 18625 of 2,182608 of 2,182−0.061,793-27,562238.373.2
Vina GSAVina–60.7−0.258.4−2.30 of 170 of 171 of 171 of 17not metnot met02 of 730 of 7319 of 61817 of 6180.005,80196,4897325.910.9
Colusa Groundwater Authority GSA - ButteButte–7.4−3.86.8−0.60 of 10 of 10 of 10 of 1not metnot met00 of 10 of 10 of 10 of 1–029128.64.2
Stanislaus and Tuolumne Rivers Groundwater Basin Association GSAModesto–98.1+25.596.9−1.213 of 649 of 330 of 130 of 13not metmet by Sep 2027607 of 422 of 4223 of 1,03122 of 1,031−0.0137,2077,1727118.66.8
Amador County Groundwater Management Authority GSACosumnes–36.4−26.138.5+2.10 of 60 of 21 of 50 of 2not metnot met3––2 of 762 of 76−0.010-17,1851012.225.5
Olcese Water District GSAKern CountyCOD119.7−100.0113.0−6.70 of 2–0 of 2–not metnot met0––––+0.010838240.015.8
Central Delta Water Agency GSAEastern San JoaquinCOD14.2+2.413.4−0.80 of 230 of 2011 of 219 of 19not metnot met0––2 of 112 of 11−0.020-15,61311.24.7
Central Delta-Mendota GSADelta-MendotaCOD191.7+7.4177.8−13.91 of 200 of 184 of 180 of 18not metnot met01 of 170 of 176 of 545 of 54−0.01427104,936239.018.6
South Delta Water Agency GSAEastern San JoaquinCOD24.4+6.420.5−3.90 of 10 of 10 of 10 of 1not metnot met00 of 10 of 11 of 591 of 59−0.02395,26413.67.2
West Placer GSANorth American–71.5−3.669.9−1.61 of 130 of 116 of 116 of 11not metnot met01 of 490 of 4911 of 23211 of 232−0.0183215,0074927.54.2
County of Sutter GSA - SutterSutter–13.3−7.411.7−1.60 of 190 of 1410 of 169 of 14not metnot met00 of 160 of 160 of 2210 of 221−0.014,1316,305178.54.2
West Turlock Subbasin GSATurlock–50.3+1.248.3−2.06 of 286 of 270 of 60 of 6metmet again by Oct 20261005 of 661 of 669 of 1,5347 of 1,534−0.0184,88442,7767623.210.9
Southwest Kings GSATulare LakeCOD, Probation233.1−57.6209.8−23.30 of 20 of 20 of 10 of 1not metnot met01 of 20 of 2––−0.021,9306,08164.351.6
Oakdale Irrigation District GSAEastern San JoaquinCOD117.3+20.6116.8−0.50 of 30 of 33 of 33 of 3not metnot met02 of 42 of 424 of 41523 of 415−0.01231-13,4701326.423.1
County of Merced GSA - Delta-MendotaDelta-MendotaCOD40.2+10.635.0−5.20 of 100 of 80 of 80 of 8not metnot met00 of 50 of 50 of 630 of 63−0.0527218,4871317.44.7
Widren Water District GSADelta-MendotaCOD117.9−7.6108.4−9.50 of 10 of 10 of 10 of 1not metnot met0–––––050500.027.0
East Turlock Subbasin GSATurlock–164.9−25.7164.5−0.410 of 187 of 162 of 131 of 11metmet again by Oct 20261003 of 351 of 358 of 1687 of 168−0.017,83835,9205324.521.1
Reclamation District No. 1500 GSASutter–11.3−1.37.3−4.00 of 120 of 103 of 110 of 10not metnot met00 of 100 of 100 of 90 of 9–5305,0101110.74.7
White Wolf GSAWhite Wolf–508.9−26.5501.7−7.20 of 160 of 25 of 120 of 2not metnot met00 of 120 of 120 of 20 of 2−0.0117,53939,9642514.818.2
Reclamation District No. 1001 GSANorth American–14.7−2.112.9−1.80 of 40 of 42 of 42 of 4not metnot met00 of 110 of 110 of 230 of 23+0.011,2135051140.75.6
South San Joaquin GSAEastern San JoaquinCOD59.7+10.557.5−2.20 of 10 of 11 of 11 of 1not metnot met00 of 90 of 90 of 6750 of 675−0.028,4633,11199.14.2
County of San Joaquin GSA - TracyTracy–44.2+9.540.5−3.70 of 30 of 31 of 30 of 3not metnot met01 of 10 of 117 of 25116 of 251−0.022,23117,92272.67.2
Reclamation District No. 2106 GSAButte–16.8+0.114.9−1.90 of 70 of 72 of 72 of 7not metnot met00 of 90 of 90 of 100 of 10–75137915.84.2
County of Madera GSA - Delta-MendotaDelta-MendotaCOD94.9+18.685.3−9.60 of 2–––not metnot met0––––−0.168971,28600.07.2
Tehama County Flood Control and Water Conservation District GSALos Molinos–78.1+10.377.0−1.10 of 100 of 71 of 60 of 6not metnot met00 of 390 of 3912 of 25212 of 252+0.0102,4194529.14.2
Tehama County Flood Control and Water Conservation District GSARed Bluff–85.6+7.781.7−3.90 of 70 of 55 of 55 of 5metno longer met775 of 360 of 36100 of 1,62291 of 1,622−0.024,43023,912409.46.4
County of Sutter GSA - North AmericanNorth American–26.3−0.423.9−2.40 of 10 of 10 of 10 of 1not metnot met00 of 10 of 10 of 210 of 21−0.012662,52113.15.2
Reclamation District No. 1004 GSA - Butte 2Butte–14.9−14.313.9−1.00 of 530 of 5010 of 507 of 50not metnot met0–––––0-12800.07.2
Butte Water District GSA - SutterSutter–13.2−1.211.1−2.10 of 40 of 31 of 30 of 3not metnot met00 of 60 of 60 of 230 of 230.0004,797629.94.3
Tehama County Flood Control and Water Conservation District GSAAntelope–41.0+4.139.0−2.00 of 20 of 21 of 21 of 2not metnot met00 of 130 of 133 of 4153 of 415−0.011,414-3881963.85.2
Tehama County Flood Control and Water Conservation District GSABend–46.0+2.344.1−1.9–––––––0 of 10 of 11 of 491 of 490.0001,30412.813.7
County of Glenn GSA - ColusaColusa–19.2−0.316.9−2.30 of 480 of 3813 of 398 of 38not metnot met0––––−0.01754700.05.6
County of Glenn GSA - CorningCorning–19.6−0.918.3−1.31 of 542 of 4641 of 4637 of 46metmet again by Oct 2026100–––––0600.04.2
County of Glenn GSA - ButteButte–14.6−2.312.6−2.00 of 1–––not metnot met0––0 of 40 of 40.001,541-2700.04.3
Tehama County Flood Control and Water Conservation District GSACorning–116.1+24.0112.0−4.11 of 391 of 3129 of 3125 of 31metmet again by Oct 20261001 of 480 of 4888 of 1,00177 of 1,001−0.012,01559,7654919.57.2
Woodbridge Irrigation District GSAEastern San JoaquinCOD33.5+1.033.4−0.10 of 30 of 20 of 30 of 2not metnot met00 of 20 of 21 of 660 of 66−0.021,914-6,65936.56.0
Reclamation District No. 1004 GSA - Butte 1Butte–12.3−4.811.4−0.90 of 30 of 30 of 30 of 3not metnot met00 of 70 of 70 of 50 of 5–0-1,181719.24.2
Yolo Subbasin GSAYolo–62.3+7.656.2−6.11 of 620 of 5627 of 5728 of 56not metnot met01 of 2810 of 28114 of 78313 of 783−0.0114,6997,22033539.76.8
Reclamation District No. 1004 GSA - ColusaColusa–13.4−5.012.4−1.00 of 480 of 3813 of 398 of 38not metnot met0––––0.000-13000.04.7
Sacramento Central Groundwater Authority GSA - 1South American–68.5−10.467.3−1.22 of 342 of 304 of 324 of 30not metnot met02 of 290 of 292 of 2372 of 237−0.017,5664,7063210.87.7
Triangle T Water District GSAChowchillaCOD121.2+32.3112.3−8.90 of 4–0 of 4–not metmet by Oct 2026100––1 of 61 of 6−0.2507,631417.720.1
City of Antioch GSAEast Contra Costa–26.9−11.123.2−3.70 of 20 of 10 of 10 of 1not metnot met00 of 10 of 11 of 201 of 20−0.014211,69616.57.7
Discovery Bay Community Services District GSAEast Contra Costa–19.1−6.116.8−2.30 of 10 of 10 of 10 of 1not metnot met00 of 60 of 60 of 100 of 10−0.010-1926136.45.6
County of Contra Costa GSAEast Contra Costa–12.4+0.19.7−2.70 of 30 of 32 of 32 of 3not metnot met01 of 60 of 63 of 873 of 87−0.021531,94989.94.3
City of Brentwood GSAEast Contra Costa–48.7−4.546.7−2.00 of 20 of 22 of 22 of 2not metnot met00 of 30 of 31 of 300 of 30−0.01773,090324.07.7
West Stanislaus Irrigation District GSADelta-MendotaCOD99.3+6.291.8−7.50 of 30 of 10 of 10 of 1not metnot met00 of 20 of 23 of 533 of 53−0.014247,21238.914.6
East Contra Costa Irrigation District GSAEast Contra Costa–25.1−3.623.1−2.00 of 10 of 11 of 11 of 1not metnot met01 of 100 of 103 of 1912 of 191−0.01773,1741160.44.2
Reclamation District No. 2110 GSA - Northern Delta GSASouth American–10.3+2.89.5−0.80 of 1–0 of 1–not metnot met0–––––0153141.74.2
Tri-County Water Authority GSA - TuleTuleCOD, Probation225.3+15.2221.7−3.62 of 7–0 of 2––cannot be computed–––0 of 70 of 7−0.250-24944.244.7
Tri-County Water Authority GSA - Tulare LakeTulare LakeCOD, Probation213.5−26.5215.9+2.40 of 20 of 2––not metnot met00 of 10 of 10 of 10 of 1−0.020-37645.341.1
Franklin Drainage District GSA - Northern Delta GSASouth American–17.3−1.814.3−3.00 of 30 of 20 of 20 of 2not metnot met00 of 20 of 20 of 20 of 2–0-769216.94.7
City of Galt GSACosumnes–101.8+1.0101.2−0.60 of 1–1 of 1–not metnot met3––1 of 81 of 8−0.020-47112.75.2
Omochumne-Hartnell Water District GSA - South AmericanSouth American–72.9−34.473.0+0.10 of 70 of 60 of 70 of 6not metnot met00 of 50 of 50 of 850 of 85−0.02152811934.012.6
Reclamation District No. 349 GSASolano–15.1+12.29.3−5.86 of 413 of 3027 of 3423 of 30not metnot met0––0 of 10 of 1−0.010-18900.012.7
Turner Island Water District GSA - Delta-MendotaDelta-MendotaCOD69.9+31.351.4−18.50 of 10 of 10 of 10 of 1not metnot met0––1 of 11 of 1–01,22100.031.7
County of San Joaquin GSA - Eastern San Joaquin 1Eastern San JoaquinCOD43.4+3.542.1−1.30 of 230 of 2011 of 219 of 19not metnot met01 of 40 of 40 of 1130 of 113−0.021,8832,27667.64.2
County of San Joaquin GSA - Eastern San Joaquin 2Eastern San JoaquinCOD38.6−12.838.4−0.20 of 230 of 2011 of 219 of 19not metnot met0––0 of 210 of 21−0.030-1700.04.7
Sloughhouse Resource Conservation District GSA - CosumnesCosumnes–125.4−2.6122.7−2.70 of 50 of 40 of 41 of 4not metnot met30 of 90 of 92 of 3701 of 370−0.0209,65196.512.9
County of Sacramento GSA - South AmericanSouth American–16.0+2.514.8−1.22 of 452 of 384 of 424 of 38not metnot met0––0 of 30 of 3−0.010-6300.04.2
Solano Subbasin GSASolano–37.1−1.732.1−5.02 of 231 of 1616 of 1912 of 16not metnot met03 of 391 of 396 of 2946 of 294−0.021,071-8,6764714.15.6
Galt Irrigation District GSACosumnes–136.8+5.8133.5−3.31 of 21 of 22 of 22 of 2not metnot met30 of 10 of 12 of 3672 of 367−0.0203,32024.04.2
Sacramento County GSA - CosumnesCosumnes–42.2−15.741.5−0.70 of 30 of 20 of 20 of 2not metnot met30 of 50 of 50 of 260 of 26−0.020960624.78.1
Northwestern Delta-Mendota GSADelta-MendotaCOD82.4−12.875.2−7.20 of 40 of 40 of 40 of 4not metnot met00 of 40 of 42 of 562 of 56−0.023,01013,92268.018.2
Byron-Bethany Irrigation District GSA - East Contra CostaEast Contra Costa–23.4+2.718.4−5.00 of 1–1 of 1––cannot be computed–0 of 40 of 42 of 1122 of 112−0.0204,427532.321.9
County of Tulare GSA - TuleTuleCOD, Probation258.8+118.2249.5−9.3–––––––––24 of 3424 of 34−0.3307817.847.9
Central Kings GSAKingsCOD103.3+16.295.7−7.60 of 140 of 147 of 142 of 14not metnot met00 of 121 of 1274 of 1,32868 of 1,328−0.0246,02468,9392611.05.2
Vandalia Water District GSATuleCOD, Probation60.8−44.757.4−3.40 of 100 of 11 of 100 of 1not metnot met0––0 of 70 of 7+0.010-444147.627.2
Shafter-Wasco Irrigation District GSAKern CountyCOD350.9+28.8339.7−11.20 of 100 of 92 of 102 of 9not metnot met01 of 130 of 133 of 411 of 41−0.023,8813,1221519.211.3
Delano-Earlimart Irrigation District GSATuleCOD, Probation273.2+24.1264.0−9.21 of 90 of 55 of 93 of 5not metnot met731 of 90 of 95 of 384 of 38−0.065,9586,2081820.017.0
Kern River GSAKern CountyCOD210.0+8.5198.4−11.61 of 390 of 144 of 350 of 14not metnot met02 of 392 of 394 of 1334 of 133−0.0185,17340,7326317.515.0
Arvin GSAKern CountyCOD343.1−8.9327.7−15.40 of 160 of 163 of 161 of 16not metnot met00 of 200 of 202 of 202 of 20−0.0130,11028,0252514.911.3
Wheeler Ridge-Maricopa GSAKern CountyCOD265.2+15.8256.9−8.30 of 150 of 50 of 150 of 5not metnot met00 of 90 of 92 of 102 of 10−0.0111,989-9022417.633.7
Tejon-Castac Water District GSAKern CountyCOD351.5−71.9343.5−8.00 of 10 of 10 of 10 of 1not metnot met00 of 10 of 1––+0.015172,73113.324.4
Mid-Kaweah GSAKaweahCOD170.0+15.9158.7−11.30 of 420 of 21 of 260 of 2not metnot met00 of 20 of 27 of 2706 of 270−0.323,60751,6454125.211.7
Greater Kaweah GSAKaweahCOD123.1−0.4114.1−9.01 of 331 of 222 of 261 of 22not metnot met00 of 220 of 2237 of 93926 of 939−0.168,11360,036349.915.2
Rosedale-Rio Bravo Water Storage District GSAKern CountyCOD232.4−13.6224.0−8.40 of 200 of 150 of 140 of 12not metnot met01 of 221 of 220 of 480 of 480.008,256-1,4172532.732.1
Yuba Water Agency GSA - South YubaSouth Yuba–27.0−7.425.3−1.70 of 180 of 181 of 180 of 18not metnot met00 of 580 of 580 of 660 of 66−0.012,3047,4736035.17.2
Reclamation District No. 501 GSA - Northern Delta GSASolano–15.2+6.69.9−5.36 of 413 of 3027 of 3423 of 30not metnot met0––0 of 10 of 1–115-5,93500.015.4
Southern San Joaquin Municipal Utility District - GSAKern CountyCOD322.5+3.7315.6−6.90 of 120 of 51 of 91 of 5not metnot met02 of 70 of 77 of 1187 of 118−0.024,744-2,9221514.516.0
Kern-Tulare Water District GSA - Kern CountyKern CountyCOD532.7+26.2532.0−0.70 of 50 of 30 of 40 of 3not metnot met00 of 20 of 21 of 41 of 4−0.020-3,991633.986.4
Kern-Tulare Water District GSA - TuleTuleCOD, Probation406.2−32.4403.3−2.90 of 30 of 10 of 30 of 1not metnot met00 of 30 of 3––−0.030-828537.029.5
Chowchilla Water District GSAChowchillaCOD238.7+48.7229.3−9.47 of 156 of 151 of 151 of 15not metmet by Oct 20261001 of 260 of 2627 of 28625 of 286−0.202,94935,6313526.211.7
County of Madera GSA - ChowchillaChowchillaCOD178.5+19.1174.4−4.15 of 153 of 91 of 111 of 9not metmet by Oct 20261001 of 120 of 122 of 222 of 22−0.2346717,0901420.323.7
North Kings GSAKingsCOD104.0+21.796.5−7.50 of 340 of 3112 of 335 of 31not metnot met05 of 350 of 35130 of 2,79599 of 2,795−0.0224,87899,256449.15.6
South Kings GSAKingsCOD72.2+11.064.2−8.00 of 20 of 21 of 20 of 2not metnot met00 of 20 of 21 of 171 of 17−0.014,8034,894212.86.4
City of Vacaville GSASolano–135.3+0.8128.4−6.90 of 40 of 43 of 43 of 4not metnot met01 of 30 of 35 of 85 of 8−0.030762312.95.6
Byron-Bethany Irrigation District GSA - TracyTracy–68.9+9.563.9−5.00 of 40 of 10 of 10 of 1not metnot met0––0 of 710 of 71−0.021155,867514.218.4
Reclamation District No. 551 GSASouth American–12.3+1.48.8−3.52 of 452 of 384 of 424 of 38not metnot met0––0 of 70 of 7−0.0138-1,38300.06.4
Solano Irrigation District GSASolano–91.4+11.383.2−8.24 of 122 of 98 of 98 of 9not metnot met02 of 110 of 1153 of 15753 of 157−0.02012,9781116.39.2
Reclamation District No. 1002 GSA - Northern Delta GSASouth American–17.30.016.5−0.82 of 452 of 384 of 424 of 38not metnot met0––––−0.020-3400.04.2
Reclamation District No. 813 GSA - Northern Delta GSASouth American–18.5−1.015.4−3.12 of 452 of 384 of 424 of 38not metnot met0––––−0.010-22800.04.7
Reclamation District No. 744 GSA - Northern Delta GSASouth American–14.9−1.312.4−2.52 of 452 of 384 of 424 of 38not metnot met0––0 of 30 of 3−0.010-15100.04.7
Reclamation District No. 369 GSA - Northern Delta GSASouth American–8.1+1.37.1−1.02 of 452 of 384 of 424 of 38not metnot met0––––−0.0108600.04.2
Westside District Water Authority GSAKern CountyCOD211.3+75.8201.6−9.70 of 40 of 30 of 30 of 3not metnot met01 of 30 of 30 of 20 of 2−0.0395029,859245.911.7
West Kern Water District GSAKern CountyCOD113.6−78.0104.8−8.80 of 5–0 of 2–not metnot met0––0 of 40 of 4−0.0314,03121,26220.879.6
North Kern Water Storage District GSAKern CountyCOD334.5+14.8323.8−10.70 of 100 of 12 of 90 of 1not metnot met00 of 120 of 121 of 111 of 11−0.0233,2058,1212220.916.6
Kern Water Bank GSAKern CountyCOD137.6−93.4122.7−14.90 of 30 of 10 of 20 of 1not metnot met00 of 20 of 20 of 60 of 6−0.017,54579439.254.5
Terra Bella Irrigation District GSATuleCOD, Probation141.1−29.4136.0−5.10 of 100 of 11 of 100 of 1not metnot met0––0 of 200 of 20−0.030-5,32114.625.2
Tule East GSA JPATuleCOD, Probation245.8−33.7241.1−4.70 of 3–1 of 3––cannot be computed–0 of 30 of 311 of 28311 of 283−0.02393-18,41285.220.9
Kern Non-Districted Land Authority GSAKern CountyCOD434.5+15.3432.2−2.30 of 110 of 81 of 81 of 8not metnot met01 of 83 of 89 of 558 of 55−0.0110,445-10,678122.829.7
Tea Pot Dome Water District GSATuleCOD, Probation71.9−43.669.0−2.90 of 100 of 11 of 100 of 1not metnot met0––0 of 190 of 19+0.010-1,28400.027.6
Porterville Irrigation District GSATuleCOD, Probation75.0−37.972.9−2.10 of 1–0 of 1––cannot be computed–––2 of 1162 of 116−0.04157-8,98914.147.5
Saucelito Irrigation District GSATuleCOD, Probation201.2−34.9192.1−9.10 of 3–0 of 3––cannot be computed–––0 of 170 of 17−0.16077239.719.0
Sacramento County GSA - SolanoSolano–13.6−0.710.5−3.10 of 20 of 10 of 20 of 1not metnot met00 of 10 of 10 of 400 of 40−0.020-22,62332.87.7
Cordua Irrigation District GSANorth Yuba–23.4−12.120.2−3.20 of 10 of 10 of 10 of 1not metnot met00 of 100 of 100 of 340 of 34−0.0102,2581159.85.6
Richvale Irrigation District GSAButte–7.4−2.46.3−1.10 of 50 of 41 of 40 of 4not metnot met00 of 70 of 70 of 250 of 250.001131,957710.54.2
Biggs-West Gridley Water District GSAButte–9.4−1.48.4−1.00 of 40 of 41 of 41 of 4not metnot met00 of 60 of 60 of 400 of 40+0.0111351269.74.2
Western Canal Water District GSAButte–14.1−1.812.4−1.70 of 100 of 92 of 92 of 9not metnot met00 of 170 of 170 of 270 of 27–1133,9911715.44.2
City of Gridley GSAButte–10.3+1.59.0−1.30 of 10 of 10 of 10 of 1not metnot met00 of 10 of 10 of 40 of 4+0.010-38124.44.2
City of Marysville GSANorth Yuba–20.4−3.520.0−0.40 of 130 of 133 of 133 of 13not metnot met0––0 of 30 of 3−0.010-7500.08.4
City of Biggs GSAButte–11.5+3.010.1−1.40 of 530 of 5010 of 507 of 50not metnot met0––0 of 20 of 2+0.0101300.04.2
Yuba Water Agency GSA - North YubaNorth Yuba–23.6−8.320.9−2.70 of 130 of 133 of 133 of 13not metnot met00 of 380 of 383 of 1423 of 142−0.011,32011,1344143.24.3
Butte Water District GSA - ButteButte–18.8+2.716.8−2.00 of 60 of 60 of 60 of 6not metnot met00 of 60 of 63 of 833 of 83+0.011,2421,840616.54.7

Reading this table

Cite

Gray, W. (2026). Central Valley Groundwater Map and Forecast, release 2026-09.5cdfad9c (readings through Sep 2026) [Data set]. CC BY 4.0. https://groundwater-map-175591637760.us-west1.run.app/release/2026-09.5cdfad9c

Central Valley Groundwater Map and Forecast (Gray, W.). CC BY-NC 4.0.