| National Arbor Day FoundationLincoln | Form 990 | $111,866,996FY2025 |
| Omaha Botanical Center IncOmaha | Form 990 | $20,686,815FY2025 |
| Omaha Parks Foundation IncOmaha | Form 990 | $6,624,952FY2024 |
| Seventy-Five North Revitalization CorporationOmaha | Form 990 | $4,950,704FY2024 |
| Nebraska Game and Parks FoundationWaverly | Form 990 | $3,800,640FY2025 |
| Platte River Basin Environments IncScottsbluff | Form 990 | $2,143,726FY2025 |
| Wachiska Audubon SocietyLincoln | Form 990 | $1,929,399FY2025 |
| Keep Omaha BeautifulOmaha | Form 990 | $1,694,262FY2024 |
| Nebraska Land TRLincoln | Form 990 | $1,344,086FY2025 |
| Prairie Plains Resource InstituteAurora | Form 990 | $1,257,130FY2025 |
| Conservation NebraskaLincoln | Form 990 | $1,108,504FY2024 |
| Nebraska Statewide Arboretum IncorporatedLincoln | Form 990 | $877,721FY2025 |
| Lake Cunningham Development TrustOmaha | Form 990 | $794,949FY2025 |
| Healthy Housing OmahaOmaha | Form 990 | $689,290FY2024 |
| Western Resources Group IncOgallala | Form 990 | $545,181FY2025 |
| Keep Nebraska BeautifulLincoln | Form 990 | $425,061FY2025 |
| Izaak Walton League of AmericaLincoln | Form 990 | $414,083FY2025 |
| Grand Island Area Clean Community System IncGrand Island | Form 990 | $380,865FY2025 |
| Florida Urban Forestry Council IncMilford | Form 990 | $359,076FY2025 |
| Nebraska Association of Resources Districts Foundation IncLincoln | Form 990 | $275,886FY2025 |
| Otoe County Wildlife ClubNebraska City | Form 990 | $224,226FY2025 |
| Kamo IncTekamah | Form 990 | $220,569FY2025 |
| Keep Cass County BeautifulLouisville | Form 990-EZ | $191,196FY2025 |
| Southwest Weed ManagementMcCook | Form 990-EZ | $174,684FY2026 |
| Loup Basin Resource Conservation and Development CouncilBurwell | Form 990-EZ | $162,745FY2025 |
| Keep Fremont BeautifulFremont | Form 990-EZ | $158,699FY2025 |
| Prairie Pines Pals LtdLincoln | Form 990 | $136,424FY2025 |
| Conservation Fusion IncBellevue | Form 990-EZ | $123,600FY2024 |
| Keep Schuyler BeautifulSchuyler | Form 990-EZ | $116,182FY2025 |
| Friends of Nebraska City Riverview Nature ParkNebraska City | Form 990-EZ | $115,780FY2025 |
| Keep Lexington BeautifulLexington | Form 990-EZ | $108,425FY2025 |
| Light Beneath the Well FoundationColumbus | Form 990-EZ | $106,548FY2025 |
| Water Futures Partnership-Nebraska IncLincoln | Form 990-EZ | $97,328FY2025 |
| Audubon Society of OmahaOmaha | Form 990 | $91,074FY2025 |
| Platte River Operation Nature Renewal IncOmaha | Form 990-EZ | $80,645FY2025 |
| Greenfields Nature SanctuaryOmaha | Form 990-EZ | $72,594FY2025 |
| Back to the River IncOmaha | Form 990 | $60,579FY2024 |
| Replant WoodcliffFremont | Form 990-EZ | $59,067FY2025 |
| Platte River Recovery Implementation FoundationLincoln | Form 990-N | No figure |
| Lincoln Botanical GardenLincoln | Form 990-N | No figure |
| Northeast Nebraska Resource Conservation and Development IncRoyal | Form 990-N | No figure |
| The Loveland Garden ClubOmaha | Form 990-N | No figure |
| Loess Canyon Rangeland Alliance IncMaywood | Form 990-N | No figure |
| Governors Biofuels CoalitionLincoln | Form 990-N | No figure |
| Nebraska Native Plant SocietyOmaha | Form 990-N | No figure |
| Njiva Charities IncOmaha | Form 990-N | No figure |
| Daughters of Union Veterans of the Civil War 1861-1865Lincoln | Form 990-N | No figure |
| Green Omaha CoalitionOmaha | Form 990-N | No figure |
| Wild Rose Woods IncDenton | Form 990-N | No figure |
| Fishing Education FoundationLincoln | Form 990-N | No figure |