2022년 5월부터 2023년 3월까지 화진포호의 환경을 조사한 결과 북호는 염분도가 높게 나타났으며 남호는 낮게 나타났고 용존산소는 수심 1 m 정도부터 급격히 낮아져 상습적으로 무산소 혹은 저산소층이 발생하였다. 본 조사에서 채집된 어류는 총 11목 17과 32종 10244개체였으며, 비교풍부도의 대부분을 황어와 전어가 차지하였다. 과거 어류상과의 비교에서 본 조사에서 채집되지 않은 종은 12종, 새로 채집된 종은 1종이었다. 해수어/담수어의 비율을 조사한 결과 남호는 담수어의 비율이 매우 높았고, 북호 또한, 담수어의 비율이 70%를 차지하여 화진포호는 담수화가 진행되고 있다고 판단된다. 또한, 화진포호 곳곳에서 어류폐사가 발생하였으며, 이러한 결과는 교각과 도로, 수문건설을 위해 화진포호의 수로를 축소시켜 수체이동이 제한된 것과 주기적이고 인위적인 갯터짐이 원인이라 생각된다. 이러한 문제를 해결하려면 각 수로의 확장 및 인위적인 갯터짐의 금지가 필수적이라고 판단된다.
From May 2022 to March 2023, an investigation was conducted on the environment of Hwajinpo. The results indicated that the northern part of the lake had high salinity, while the southern part showed low salinity. Dissolved oxygen levels decreased significantly from a depth of about 1 m, leading to the persistent occurrence of anaerobic or hypoxic conditions. A total of 11 orders, 17 families, 32 species, 10,244 individuals of fish were collected during this study. The majority of the relative abundance was Tribolodon hakonensis and Konosirus punctatus. In comparison with other studies, 12 species were not collected in this study, while 1 new species was collected. The investigation of marine and freshwater fish ratios revealed that the southern part of the lake had a very high proportion of freshwater fish, and the northern part also had a freshwater fish ratio of 70%. This suggests that Hwajinpo Lake is undergoing to freshwaterification. Fish kills were observed throughout Hwajinpo Lake, and it is believed that the constriction of waterways due to the construction of bridges, roads, water gates, and periodic and artificial ‘breaking-sandbar’ has limited the movement of water bodies, contributing to these issues. To address these problems, it is essential to expand the various waterways and ban of artificial ‘breakingsandbar’.