The SWRC operates the Walnut Gulch Experimental Watershed in southeastern Arizona as an outdoor laboratory for studying semiarid rangeland hydrologic, ecosystem, climate, and erosion processes.

An overview of SWRC and WGEW research is provided in a downloadable brochure:   SWRC Brochure 

   WGEW Instrumentation Map     Santa Rita Instrumentation Map

 

 

Gage Locations

Note:  These are not survey-grade coordinates.

  UTM Coordinates  
Watershed (*) Gage East
(m)
North
(m)
Elevation
(m)
Error (**)
(m)
63 1 580177 3510850 1222 9
63 2 581187 3512053 1254 9
63 3 581204 3509768 1246 18
63 4 582932 3512517 1278 8.7
63 5 582649 3510770 1269 12
63 7 584459 3512808 1298 8.6
63 8 583788 3511375 1286 11
63 9 584592 3509391 1339 4.2
63 10 584265 3508354 1376 6
63 11 585909 3512635 1316 18
63 12 585356 3511396 1285 15
63 13 586110 3510185 1334 20
63 14 585442 3507187 1390 11
63 15 587458 3513185 1328 15
63 16 586839 3511669 1330 13
63 17 588021 3510226 1357 11
63 18 586710 3508098 1365 12
63 19 587845 3506713 1447 10
63 20 587480 3504939 1525 8.6
63 21 589091 3513386 1356 8.2
63 22 588341 3511789 1343 12
63 23 589101 3511164 1334 8.2
63 24 588636 3508844 1387 17
63 25 589809 3506879 1431 9.8
63 26 588736 3505522 1486 11
63 27 590419 3511838 1361 13
63 28 590624 3509990 1369 8.4
63 29 591791 3508586 1373 8.5
63 30 591511 3505993 1447 9.9
63 31 592402 3513702 1413 7.4
63 32 592441 3511695 1383 22
63 33 591778 3510511 1387 6.5
63 34 590946 3507458 1420 9.8
63 35 591655 3506921 1409 8.8
63 36 591306 3504994 1459 10
63 37 593303 3506068 1404 11
63 38 594711 3513538 1452 9.4
63 39 593470 3511293 1420 9
63 40 593360 3510286 1390 7.5
63 41 593275 3508064 1407 12
63 42 592673 3504936 1423 10
63 43 595343 3514431 1466 9
63 44 594952 3511627 1443 11
63 45 594726 3510299 1428 9.2
63 46 595289 3508655 1445 7.9
63 47 594270 3507025 1416 10
63 48 595587 3505653 1442 11
63 49 594481 3505240 1437 12
63 50 596864 3514919 1487 5.6
63 51 595610 3513095 1460 6.2
63 52 596490 3511950 1480 10
63 53 596008 3509523 1422 8.7
63 54 598218 3513974 1523 4.9
63 55 599918 3513612 1551 4.9
63 56 598334 3512322 1490 13
63 57 596089 3510781 1456 8.1
63 58 597422 3509510 1423 6.7
63 59 598307 3508443 1469 5.9
63 60 599659 3512461 1514 8.7
63 61 599409 3511574 1502 5.3
63 62 600544 3511056 1504 5.6
63 63 599477 3509758 1470 5.9
63 64 601283 3514443 1573 4.4
63 65 601253 3512633 1550 9.5
63 66 602039 3511414 1527 6.1
63 67 602523 3514774 1610 4.4
63 68 603070 3513183 1578 12
63 69 603916 3515463 1638 8.4
63 70 604288 3514207 1630 12
63 71 591791 3512561 1388 8.3
63 72 598354 3511165 1475 7.3
63 74 590549 3513984 1382 8.6
63 76 582624 3509679 1311 13
63 79 586527 3509127 1334 10
63 80 590761 3511243 1372 10
63 81 589310 3508200 1406 17
63 82 600154 3511680 1512 5.3
63 83 589697 3512426 1368 9.4
63 87 593369 3512745 1418 7.4
63 88 597437 3513364 1501 7.7
63 89 596308 3513931 1491 7.2
63 90 596547 3513084 1463 5.3
63 91 599114 3513048 1530 3.5
63 92 581888 3511774 1244 9.4
63 100 593266 3504720 1418 13
63 101 589526 3512229 1365 4.3
63 102 589517 3512468 1369 4.3
63 103 589814 3512391 1369 4.3
63 104 589728 3512146 1361 4.3
63 105 599652 3511763 1523 4.3
63 106 599793 3511869 1513 4.3
63 107 600177 3511839 1519 4.3
63 108 599803 3511693 1508 4.3
63 109 600029 3511767 1515 4.3
63 301 589812 3512445 1365 8.6
63 307 589530 3512226 1366 4.1
63 384 589650 3512287 1359 9
63 386 589546 3512410 1365 4.2
63 398 591370 3511054 1379 11
63 399 589732 3510331 1350 10
63 400 582124 3518828 1258 13
63 401 568321 3486006 1448 0
63 402 568412 3485884 1447 0
63 403 568806 3485822 1431 0
63 404 568636 3485822 1437 0
63 405 571258 3506843 1198 0
63 406 573485 3468309 1512 0
63 407 601853 3473471 1494 0
63 408 569578 3532305 1097 0
63 409 589990 3529727 1476 0
63 410 605797 3515697 1854 0
63 411 588104 3496282 1299 0
63 412 598812 3483402 2171 0
63 413 599874 3524258 2144 0
63 414 561278 3522768 1466 0
63 415 556530 3489184 2110 0
63 416 560085 3484923 2299 0
63 417 584702 3473697 1284 0
63 418 575868 3494594 1286 0
63 419 568576 3467898 2017 0
63 420 567959 3485736 1409 0
63 421 548540 3495059 1452 0
63 422 544831 3494627 1492 0
63 423 547920 3496185 1453 0
63 424 558346 3485444 1409 0
63 425 570183 3491463 1367 0
63 426 567342 3487870 1433 0
63 600 577949 3503460 1191 12
76 1 513036 3524541 1046 13
76 2 512945 3524350 1049 10
76 3 508238 3524192 970 9.9
76 4 509065 3523927 897 12
76 5 514046 3519959 1163 8.6
76 6 513778 3519800 1215 9
76 7 513158 3524352 1018 0
76 8 513969 3520124 1157 9.2
76 9 514176 3520077 1211 0

(*) - 63 = Walnut Gulch, 76 = Santa Rita

(**) - Estimated Horizontal Error (EHE)