SONORAN INSTITUTE INC

Financials

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended June 30, 2025, highest compensation first.

Address and contacts

Address (IRS master file)

5049 E BROADWAY BLVD STE 127, TUCSON, AZ 85711-3656

Principal officer (990 for 2024)

DAN KIMBALL, 5049 E BROADWAY BLVD STE 127, TUCSON, AZ 85711

Signed the 990

MICHAEL ZELLNER, CEO

Phone

(520) 290-0828

Website

WWW.SONORANINSTITUTE.ORG

Return prepared by

LUDWIG KLEWER & RUDNER PLLC

Mission

THE SONORAN INSTITUTE'S MISSION IS TO CONNECT PEOPLE AND COMMUNITIES WITH THE NATURAL RESOURCES THAT NOURISH AND SUSTAIN THEM. WE WORK AT THE NEXUS OF COMMERCE, COMMUNITY, AND CONSERVATION TO HELP PEOPLE IN THE NORTH AMERICAN WEST BUILD THE COMMUNITIES THEY WANT TO LIVE IN WHILE PRESERVING THE VALUES WHICH BROUGHT THEM HERE. WE ENVISION A WEST WHERE CIVIL DIALOGUE AND COLLABORATION ARE HALLMARKS OF DECISION MAKING, WHERE PEOPLE AND WILDLIFE LIVE IN HARMONY, AND WHERE CLEAN WATER, AIR, AND ENERGY ARE ASSURED.

Program accomplishments

• COLORADO RIVER DELTA PROGRAM OUR VISION FOR THE COLORADO RIVER IS A RIVER THAT FLOWS CONTINUOUSLY TO THE SEA, SUPPORTING BOTH HEALTHY ECOSYSTEMS AND THRIVING COMMUNITIES. THE OVERALL GOAL OF THE PROGRAM IS TO RESTORE A FUNCTIONAL CORRIDOR IN THE COLORADO RIVER DELTA BY CREATING A NETWORK OF RIPARIAN AND ESTUARINE HABITAT SITES THAT WILL SUSTAIN BIODIVERSITY AND FACILITATE CONNECTIVITY OF RIVER FLOWS TO THE ESTUARY. IN FISCAL YEAR 2025, WE EVALUATED PROGRESS TOWARDS ACHIEVING OUR GOALS AND OUTCOMES OUTLINED IN OUR CURRENT FIVE-YEAR STRATEGIC PLAN. GOAL 1: THE COLORADO RIVER CONNECTS TO THE SEA; WITH WATER FOR BOTH HEALTHY LANDSCAPES AND THRIVING COMMUNITIES. OUR TARGET WAS TO INCREASE SUPPLY OF WATER IN THE COLORADO RIVER TO 220 DAYS OF FLOW PER YEAR. THE BASELINE WAS 147 DAYS IN 2020. IN FY25 WE ACCOMPLISHED AN AVERAGE OF 207 DAYS OF CONNECTIVITY BETWEEN 2020-2024, REPRESENTING 94% OF OUR TARGET. GOAL 2: RESTORE 2,860 ACRES OF ESTUARINE HABITAT. FROM A BASELINE IN 2021 OF 1,861 ACRES, WE ACHIEVED 5,842 ACRES BY 2025, REPRESENTING 140% OF THE TARGET. FOR LAGUNA GRANDE RESTORATION AREA, OUR TARGET WAS TO RESTORE 779 ACRES. BY 2025 WE ACCOMPLISHED 838 ACRES, REPRESENTING 107% OF OUR TARGET. IN FY25, EIGHT SMALL SITES TOTALING 11.4 ACRES IN LAGUNA GRANDE RESTORATION AREA WERE SELECTED AND PREPARED TO RECEIVE IN CHANNEL FLOWS FROM FEBRUARY TO SEPTEMBER IN 2025 AS PART OF MINUTE 323. WE ALSO MAINTAINED AND ENHANCED 838 ACRES OF RESTORED HABITAT, INCLUDING THE DELIVERY OF APPROXIMATELY 3,200 ACRE-FEET OF WATER FOR IRRIGATION OF RESTORED SITES. IN TERMS OF INSTREAM FLOWS, WE ACHIEVED THE ANNUAL TARGET VOLUME: DELIVERED 10,382 ACRE-FEET OF TREATED WASTEWATER TO THE HARDY RIVER AND UPPER ESTUARY FOR ENVIRONMENTAL RESTORATION. AS PART OF THE BINATIONAL AGREEMENT MINUTE 323, WATER DELIVERIES BEGAN ON MARCH 21, 2025, AND CONTINUED THROUGH OCTOBER 3RD. TOTAL VOLUME TO BE DELIVERED WAS 19,482 ACRE FEET OVER THAT PERIOD, AND APPROXIMATELY 70% OF THAT WAS DELIVERED BY JUNE 30,2025 IN ACCORDANCE WITH THE DELIVERY PLAN. AS THE PREVIOUS YEAR, LONGITUDINALLY CONNECTIVITY WAS APPROXIMATELY 31 MILES PROMOTING THE EXPANSION OF OPEN WATER HABITAT FOR WILDLIFE, AND THE REDUCTION OF SALINITY IN FLOODED AREAS OF THE MAIN CHANNEL AND IN THE UPPER ESTUARY. FEDERAL WATER DELIVERIES SIGNIFICANTLY INCREASED GROUNDWATER LEVELS ALONG 31 RIVER MILES UP TO 1.5 METERS IN SOME AREAS SHOWING SUSTAINED IMPROVEMENTS EVEN AFTER THE WATER DELIVERY PERIOD ENDED. AS PART OF THE BINATIONAL AGREEMENT MINUTE 323, PREPARED A PLAN TO DELIVER 22,866 ACRE-FEET OF WATER TO THE COLORADO RIVER IN CALENDAR YEAR 2026. THE SELECTED 2026 HYDROGRAPH WILL DELIVER 1.8 M/S FOR 155 DAYS FROM MARCH 21 THROUGH AUGUST 22, AND IS PROJECTED TO GENERATE FLOWS OF APPROXIMATELY 1 M/S AT THE UPPER ESTUARY, COMMUNITY OUTREACH: DURING FY25, WE CONDUCTED A TOTAL OF 15 GUIDED TOURS AT THE LAGUNA GRANDE RESTORATION SITE, REACHING 244 ATTENDEES, INCLUDING LOCAL FAMILIES FROM MEXICALI AND ITS VALLEY, YOUTH FROM HIGH SCHOOLS AND UNIVERSITIES, AND VISITORS FROM OTHER PARTS OF THE MEXICO, USA, AND OTHER COUNTRIES. THROUGH TALKS, WORKSHOPS, EXPOS, AND EDUCATIONAL MATERIALS, WE REACHED AN ADDITIONAL 2,560 STUDENTS AND COMMUNITY MEMBERS WITH TOPICS SUCH AS WETLAND CONSERVATION, BIRD WATCHING, RIVER RESTORATION, COMPOSTING, AND CLIMATE CHANGE. IN ADDITION, OUR ONLINE WASTE MANAGEMENT AND RECYCLING COURSE HAS REACHED 215 STUDENTS TO DATE. THROUGH OUR PARTICIPATION WITH OUR RAISE THE RIVER PARTNERS IN EVENTS SUCH AS THE ANNUAL AGROBAJA EXPO AND RAISE THE RIVER FESTIVAL, AN ADDITIONAL 2,237 MEMBERS OF THE COMMUNITY LEARNED ABOUT THE BENEFITS OF OPEN RIPARIAN HABITAT AND THE IMPORTANCE OF RESTORING RIVERS, WETLANDS, RIPARIAN HABITATS, AND NATIVE SPECIES. AS PART OF THE WORK OF MEXICALI FLUYE, 31 PUBLIC MEETINGS WERE HELD AS OPEN SPACES FOR COMMUNITY DIALOGUE AND INFORMATION SHARING. APPROXIMATELY 280 RESIDENTS AND LOCAL LEADERS PARTICIPATED IN THESE MEETINGS, LATER BECOMING ACTIVE ALLIES OF THE PROJECT. IN ADDITION, 53 WORKSHOPS WERE CONDUCTED, FOCUSED ON PRACTICAL TRAINING. THESE WORKSHOPS ENGAGED 1,178 COMMUNITY MEMBERS AND 1,002 STUDENTS IN ACTIVITIES SUCH AS TRASH COLLECTION, TREE PLANTING, BIRD WATCHING, WASTE MANAGEMENT TRAINING, WETLAND AND ECOSYSTEM SERVICES EDUCATION, AS WELL AS THE DETECTION AND REPORTING OF ILLEGAL DUMPING. GOAL 3: THE COLORADO RIVER DELTA HAS PERMANENT PROTECTION. THE ORIGINAL PROPOSAL TO ESTABLISH 70,000 ACRES AS A STATE PROTECTED AREA HAD TO BE RECONSIDERED TO PROVIDE ADDITIONAL TIME FOR BROADER PARTICIPATION FROM THE NATIVE CUCAPAH TRIBE. AIMING TO ENGAGE THE NATIVE CUCAPAH COMMUNITY, THE RAISE THE RIVER ALLIANCE PARTNERS DEVELOPED A SPECIFIC OUTREACH STRATEGY TO PROPERLY ENGAGE THE CUCAPAH. IMPLEMENTATION OF THIS STRATEGY BEGAN IN 2025 AND WILL CONTINUE THROUGH 2026. MEXICALI FLUYE: IN FY2025 WE CONTINUED IMPLEMENTATION OF ACTIVITIES ALONG THE NEW RIVER, THROUGH OUR MEXICALI FLUYE PROJECT. THE GOAL OF THE MEXICALI FLUYE PROJECT IS TO IMPROVE COMMUNITY QUALITY OF LIFE THROUGH IMPLEMENTING NATURE-BASED SOLUTIONS IN MEXICALI URBAN WETLANDS THAT IMPROVE RIVER'S WATER QUALITY AND THE URBAN LANDSCAPE. FOUR COMMUNITY GREEN CORRIDORS CURRENTLY UNDERGOING REHABILITATION: SOLIDARIDAD, MISIN DEL NGEL, EL DORADO, AND CAMINO REAL. WE HAVE COMPLETED REFORESTATION OF 6 HECTARES WITH 741 TREES PLANTED OF NATIVE SPECIES: MESQUITE, POPLAR, AND PALO VERDE. WE REMOVED 2,000 TONS OF WASTE. CLEANING INSIDE AND OUTSIDE THE RIVERBED (CONSTRUCTION DEBRIS, TIRES, MUNICIPAL SOLID WASTE, INVASIVE VEGETATION. WE INSTALLED BASIC INFRASTRUCTURE SUCH AS FENCING, TRAILS, 3 BIRDWATCHING PLATFORMS, IRRIGATION SYSTEM, AND RECREATIONAL AREAS FOR THE COMMUNITY (COMMUNITY GARDEN, SOCCER FIELD, MINI GOLF).
  Expenses $2,836,100 · revenue $1,054,243
• GROWING WATER SMART PROGRAM: THE GROWING WATER SMART PROGRAM ADDRESSES THE CHALLENGES OF AN OVER- APPROPRIATED COLORADO RIVER AND SURROUNDING AQUIFERS, AS WELL AS THE IMPACTS OF CLIMATE CHANGE THAT DO NOT LEAVE WATER FOR BOTH HEALTHY LANDSCAPES (ENVIRONMENT) AND THRIVING COMMUNITIES (PEOPLE). THE GROWING WATER SMART PROGRAM, OFFERED IN PARTNERSHIP WITH THE BABBITT CENTER FOR LAND AND WATER POLICY, A CENTER OF THE LINCOLN INSTITUTE OF LAND POLICY, PROVIDES TRAINING AND ASSISTANCE TO COMMUNITIES AND WATER PROVIDERS TO ESTABLISH PLANS, POLICIES AND PROGRAMS THAT CONSERVE MUNICIPAL WATER AND USE IT SUSTAINABLY IN COMMUNITIES ACROSS ARIZONA, COLORADO, CALIFORNIA, UTAH AND THE US-MEXICO BORDER REGION. IN OUR GROWING WATER SMART WORKSHOPS AND FOLLOW-UP ASSISTANCE, AN INTERDISCIPLINARY TEAM OF LAND-USE PLANNERS, WATER PROVIDERS, AND GOVERNMENT OFFICIALS ASSESS THEIR COMMUNITY'S WATER CHALLENGES, AND IDENTIFY AND IMPLEMENT STRATEGIES TO REDUCE WATER DEMAND IN NEW AND EXISTING DEVELOPMENT AND MANAGE WATER SUSTAINABLY AND HOLISTICALLY INTO THE FUTURE. 1. HELD GROWING WATER SMART WORKSHOP IN COLORADO ON SEPTEMBER 9-11, 2024. SIX COMMUNITIES PARTICIPATED: CITY OF FORT LUPTON, TOWN OF MEAD AND LITTLE THOMPSON WATER DISTRICT, CITY OF LAFAYETTE, LARIMER COUNTY, CITY OF FORT COLLINS, AND TOWN OF JOHNSTOWN. 2. HELD GROWING WATER SMART WORKSHOP IN MEXICALI, BAJA CALIFORNIA ON NOVEMBER 11-13, 2024. REGIONAL FOCUS WITH REPRESENTATION FROM MEXICALI, BAJA CALIFORNA AND IMPERIAL COUNTY, CA. 3. HELD GROWING WATER SMART WORKSHOP IN COLORADO ON APRIL 21-23, 2025. SIX COMMUNITIES PARTICIPATED: CITY OF CORTEZ WITH UTE MOUNTAIN UTE TRIBE, TOWN OF NORWOOD, TOWN OF PALISADE, TOWN OF OPHIR, CITY OF DURANGO, MIDDLE COLORADO WATERSHED COUNCIL 4. HELD GROWING WATER SMART WORKSHOP IN ARIZONA FROM JANUARY 22-24, 2025, IN CLARKDALE. THE FOLLOWING COMMUNITY TEAMS PARTICIPATED: CAMPE VERDE, CHINO VALLEY, CLARKDALE, JEROME, PRESCOT VALLEY, AND YAVAPAI COUNTY. 5. HELD A BORDER GROWING WATER SMART WORKSHOP JUNE 12, 2025, IN DOUGLAS, ARIZONA FOR THE CITIES OF DOUGLAS, ARIZONA, AND AGUA PRIETA, SONORA. 6. WATER AND LAND USE METRICS TECHNICAL ASSISTANCE WITH THE CITY OF THORNTON, COLORADO, AND LITTLE THOMPSON WATER DISTRICT AND OUR CONSULTANT BRENDLE GROUP. -THE CITY OF THORNTON CREATED A MICROSOFT EXCEL-BASED TOOL FOR INPUTTING WATER DATA AND IRRIGATED AREA DATA. THE TOOL EXPORTS KEY METRICS, INCLUDING AVERAGE ANNUAL WATER USE, AVERAGE IRRIGATION WATER USE, AND (ONLY FOR ACCOUNTS WITH INPUT IRRIGATED AREA DATA) WATER USE INTENSITY. -LITTLE THOMPSON WATER DISTRICT CREATED A MICROSOFT EXCEL-BASED TOOL FOR INPUTTING WATER DATA AND IRRIGATED AREA DATA. THE TOOL EXPORTS KEY METRICS, INCLUDING AVERAGE ANNUAL WATER USE, AVERAGE IRRIGATION WATER USE, AND (ONLY FOR ACCOUNTS WITH IRRIGATED AREA DATA) WATER USE INTENSITY. 7. HELD 2 GROWING WATER SMART PEER NETWORK WEBINARS: -DECEMBER 12, 2024: HOW TO MAINTAIN MOMENTUM FOR IMPLEMENTATION OF WATER AND LAND USE POLICIES. -FEBRUARY 12, 2025: DATA-DRIVEN WATER AND LAND USE PLANNING POLICIES AND TOOLS. 8. RESERACHED AND SUBMITTED A REPORT ON HOW TO AND THE IMPORTANCE OF COLLABORATING ACROSS BOUNDARIES FOR WATER RESILIENCE FOR A PEER-REVIEWED JOURNAL. 9. AWARDED 5 TECHNICAL ASSISTANCE GRANTS TO PAST GROWING WATER SMART PARTICIPATING COMMUNITIES: -YAVAPAI COUNTY, AZ: COUNTY-WIDE STORMWATER MANAGEMENT POLICIES -TOWN OF JEROME, AZ: WATER RESILIENT STREET SCAPE DESIGN MANUAL -IMPERIAL COUNTY, CA: NEW WATER ELEMENT IN COMPREHENSIVE MASTER PLAN -SUMMIT COUNTY, CO: COORDINATION WITH REGIONAL WATER PROVIDERS FOR HOUSING NEEDS ASSESSMENT -TOWN OF RIDGWAY, CO: RESIDENTIAL LANDSCAPE TEMPLATES FOR TURF CONVERSION PROJECTS.
  Expenses $743,429 · grants $119,703 · revenue $299,945
• SANTA CRUZ RIVER PROGRAM SONORAN INSTITUTE'S SANTA CRUZ RIVER PROGRAM'S VISION IS FOR A LIVING, FLOWING RIVER THAT IS THE FOUNDATION OF COMMUNITY HEALTH AND PROSPERITY FROM MEXICO TO MARANA. 1. LIVING RIVERS REPORTS WERE LAUNCHED IN 2008, WHEN SONORAN INSTITUTE BEGAN TRACKING CONDITIONS OF THE STRETCH OF THE SANTA CRUZ RIVER IN SANTA CRUZ COUNTY THAT FLOWS YEAR-ROUND. THE EFFORT EXPANDED IN PARTNERSHIP WITH PIMA COUNTRY AND THE REGIONAL FLOOD CONTROL DISTRICT IN 2012, AND THE CITY OF TUCSON IN 2020, TO REPORT ON CONDITIONS IN THE FLOWING REACHES IN PIMA COUNTY. LIVING REPORTS FOR ARE ONLINE AT WWW.SONORANINSTITUTE.ORG. THIS YEAR: -FOR THE FOURTH YEAR IN A ROW, SONORAN INSTITUTE PUBLISHED OUR LIVING RIVER REPORTS FOR BOTH THE TUCSON AND NOGALES REACHES OF THE SANTA CRUZ RIVER. THE TUCSON REPORT WAS DISTRIBUTED TO NEARLY 12,000 HOUSEHOLDS AND THE NOGALES REPORT WAS DISTRIBUTED TO NEARLY 3,000 HOUSEHOLDS IN DECEMBER 2025 (+1,000 MORE ATTRIBUTABLE TO CROWN FUNDING). 2. OUR 15TH ANNUAL SANTA CRUZ RIVER RESEARCH DAYS SYMPOSIUM TOOK PLACE APRIL 29-30, 2025 WITH A FIELD TRIP ON MAY 1, AT PIMA COMMUNITY COLLEGE'S DOWNTOWN CAMPUS IN TUCSON AND ONLINE AS A HYBRID EVENT. THIS YEAR'S THEME, BUILDING ON SUCCESSES, HIGHLIGHTED THE GROWING MOMENTUM BEHIND RESEARCH, RESTORATION, AND COMMUNITY-DRIVEN WORK ALONG THE SANTA CRUZ RIVER. AS HAS BEEN THE CASE SINCE 2020, WE HAVE CONTRACTED WITH LANGUAGE INTERPRETERS TO PROVIDE OUR IN-PERSON AND VIRTUAL ATTENDEES WITH REAL-TIME ENGLISH-SPANISH TRANSLATION, RESULTING IN BROAD PARTICIPATION FROM BOTH SIDES OF THE BORDER. -SANTA CRUZ RIVER NATIONAL WILDLIFE REFUGE: IN 2025, THE MULTIYEAR EFFORT TO ESTABLISH THE SANTA CRUZ RIVER NATIONAL WILDLIFE REFUGE CONTINUES TO PROGRESS WITH STRONG REGIONAL COMMITMENT. SINCE 2023, SONORAN INSTITUTE HAS CO-LED THE REFUGE'S GRASSROOTS COALITION, WHICH HAS EXPANDED TO INCLUDE MORE THAN 50 ORGANIZATIONS, COMMUNITY LEADERS, LANDOWNERS, AND ELECTED OFFICIALS-ALL WORKING TOWARD PERMANENT FEDERAL PROTECTION FOR THE RIVER CORRIDOR FROM MEXICO TO MARANA. IN 2025, SONORAN INSTITUTE AND THE UNIVERSITY OF ARIZONA EXPANDED ECOLOGICAL STUDIES AND COMMUNITY ENGAGEMENT. A MAJOR MILESTONE WAS REACHED IN EARLY 2025 WITH THE COMPLETION AND U.S. FISH AND WILDLIFE SERVICE APPROVAL OF THE FEDERALLY REQUIRED LANDSCAPE PROTECTION STRATEGY, WHICH OUTLINES THE ECOLOGICAL, CULTURAL, AND COMMUNITY SIGNIFICANCE OF THE PROPOSED REFUGE. SONORAN INSTITUTE IS NOW DRAFTING THE COMPANION LAND PROTECTION PLAN, POSITIONING THE PROJECT FOR RAPID ADVANCEMENT WHEN FEDERAL TIMING ALIGNS. 3. SONORAN INSTITUTE BEGAN ADVANCING TWO MAJOR LINES OF INQUIRY THAT ADDRESS LONG-STANDING CONCERNS IN THE NOGALES REACH OF THE SANTA CRUZ RIVER. THE FIRST CENTERS ON RESTORATION POTENTIAL: IDENTIFYING WHERE ECOLOGICAL RESTORATION IS FEASIBLE ALONG THE EXISTING 15 MILES OF FLOWING RIVER AND EVALUATING OPPORTUNITIES FOR ADDITIONAL RESTORATION SHOULD AN INCREASED OF FLOWS INTO THE SANTA CRUZ RIVER HAPPEN. THE SECOND EFFORT IS AN ECONOMIC ANALYSIS DESIGNED TO QUANTIFY THE VALUE OF THE RIVER-ITS ECOLOGICAL FUNCTIONS, ITS SIGNIFICANCE TO NEARBY RESIDENTS AND VISITORS, AND THE POTENTIAL ECONOMIC BENEFITS ASSOCIATED WITH ADDITIONAL FLOW. TO GUIDE THIS WORK, SONORAN INSTITUTE IS ASSEMBLING AN ADVISORY GROUP OF MUNICIPAL PARTNERS, LANDOWNERS, ACADEMIC EXPERTS, AND COMMUNITY REPRESENTATIVES FROM ACROSS SANTA CRUZ COUNTY. THIS GROUP WILL REVIEW DATA COLLECTED BY SUBCONTRACTING FIRMS EVALUATING CURRENT CONDITIONS AND FUTURE OPPORTUNITIES ALONG THE RIVER CORRIDOR. 4. IMPLEMENTED THE ANNUAL FISH SURVEY ON NOVEMBER 4 & 5, 2024. THE FISH SURVEY HAD STAFF AND VOLUNTEERS SUPPORTING THE PROJECT FROM THE FEDERAL GOVERNMENT, STATE GOVERNMENT, COUNTY GOVERNMENT, THE UNIVERSITY OF ARIZONA, AND FROM PRIVATE ORGANIZATIONS. THE TEAM SURVEYED FISH UP AND DOWN THE SANTA CRUZ RIVER, FROM NOGALES WASH THROUGH MARANA. SURVEYS FOUND 7 SPECIES ACROSS 8 SITES. THE FISH NUMBERS WERE HIGH RELATIVE TO THE PREVIOUS YEAR, EVEN THOUGH TWO SURVEY SITES NEAR NOGALES WERE DRY. GILA TOPMINNOW NUMBERS WERE LOWER IN THE TUCSON AREA THAN PREVIOUS YEAR, THOUGH ARE THRIVING IN THE DOWNTOWN TUCSON SITE. 5. SONORAN INSTITUTE IMPLEMENTED THREE RIVER CLEAN-UP EVENTS: -OCTOBER 12, 2024 WAS HELD IN PARTNERSHIP WITH TUCSON CLEAN AND BEAUTIFUL AND TOOK PLACE AT THE GRANT ROAD CROSSING IN TUCSON, AZ. THIS EVENT DREW 70 VOLUNTEERS AND REMOVED 1,842 POUNDS OF TRASH. -THE DECEMBER 14, 2024, DAYS OF CONNECTION CLEANUP IN PARTNERSHIP WITH TUCSON CLEAN AND BEAUTIFUL TOOK PLACE AT ST. MARY'S ROAD AND REMOVED 2,517 LBS. OF TRASH WITH SUPPORT FROM 125 VOLUNTEERS. -MARCH 15, 2025, DAYS OF CONNECTION CLEANUP WITH TUCSON CLEAN & BEAUTIFUL REMOVED 1,025 LBS. OF TRASH FROM THE SANTA CRUZ RIVER AT VERDUGO PARK IN TUCSON, BRINGING 63 VOLUNTEERS.
  Expenses $590,734 · revenue $131,615
• ONE BASIN PROGRAM THE ONE BASIN PROGRAM BRINGS PEOPLE WITH COMPETING INTERESTS, WHO SPEAK DIFFERENT LANGUAGES, AND HAVE DIVERSE BACKGROUNDS TOGETHER TO FIND EQUITABLE, WORKABLE, EFFECTIVE SOLUTIONS TO ADDRESS WATER CHALLENGES IN THE COLORADO RIVER BASIN. THE GOAL OF THE PROGRAM IS THAT THE COLORADO RIVER IS MANAGED IN A MORE HOLISTIC, INCLUSIVE, AND ADAPTIVE FASHION TO BENEFIT COMMUNITIES AND WILDLIFE. 1. SUPPORTED THE TRIBAL WATER MANAGERS NETWORK WITH WEBINARS AND IN-PERSON MEETINGS PROVIDING TRIBAL WATER MANAGERS WITH PEER-LEARNING OPPORTUNITIES. 2. REFINED PROPOSALS FOR GOVERNANCE OF A BINATIONAL ENDOWMENT FUND FOR THE COLORADO RIVER DELTA. 3. ENGAGED WITH THE CUCUPA ON OPTIONS FOR PERMANENT PROTECTION OF THE COLORADO RIVER DELTA.
  Expenses $28,835 · grants $4,188 · revenue $30,000

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.

IRS record

EIN

86-0684610

Tax-exempt status

501(c)(3): Charitable, religious, educational or scientific organization

Foundation status

Publicly supported organization (170(b)(1)(A)(vi))

Donations deductible (Pub 78)

Public charity, 50% deduction limit

Exempt since

1995

Accounting year ends

June

Files

Form 990 or 990-EZ

Category (NTEE)

Education (B99)

Assets (IRS master file)

$4,430,981

Income (IRS master file)

$5,032,354

Filing history

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 86-0684610).

Questions about SONORAN INSTITUTE INC

What is the EIN of SONORAN INSTITUTE INC?

The employer identification number (EIN) of SONORAN INSTITUTE INC is 86-0684610.

Is SONORAN INSTITUTE INC tax-exempt?

Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1995.

Are donations to SONORAN INSTITUTE INC tax-deductible?

Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).

Which annual return does SONORAN INSTITUTE INC file?

Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.

When is the next return of SONORAN INSTITUTE INC due?

The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.

When did SONORAN INSTITUTE INC last file with the IRS?

The latest return in the IRS public files is the 990 for the year ended June 2025.

Who is the principal officer of SONORAN INSTITUTE INC?

The 990 for the year ended June 30, 2025 names DAN KIMBALL.

Who are the officers and directors of SONORAN INSTITUTE INC?

The 990 for the year ended June 30, 2025 lists 25 people; 2 received compensation from the organization, the highest $163,069 (MICHAEL ZELLNER, CEO).

How much revenue does SONORAN INSTITUTE INC have?

On its 990 for the year ended June 30, 2025 it reported revenue of $4,699,716, expenses of $4,977,483 and total assets of $4,430,981 at year end.

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