M. V. Bolgov and G. M. Chernogaeva

Water Resources of Russia in the 21st Century

5

M. Yu. Bardin and O. F. Samokhina

Changes in Surface Climate (Air Temperature and Precipitation) in Russia in the 21st Century

M. V. Bolgov and A. G. Lobanova

Engineering and Hydrological Calculations and Climate Change: How to Develop New Approaches?

25

T. M. Aksyanov, S. A. Zhuravlev, S. A. Ivanova, L. S. Kurochkina,
O. E. Kucherenko, and T. I. Yakovleva

Adaptation of the Russian Hydrological Monitoring Network to Climate Change: Challenges and Prospects

37

M. M. Trofimchuk, O. L. Romanyuk, V. M. Demidova, M. A. Golubkina,
and E. A. Ermakovich

Assessment of the State of the Inland Surface Water Pollution Monitoring Station Network of the Roshydromet State Observation Network in 2018–2023

46

N. I. Koronkevich, E. A. Barabanova, A. G. Georgiadi, S. V. Dolgov,
I. S. Zaitseva, E. A. Kashutina, and I. P. Milyukova

Genetic Hydrology: Runoff Formation Mechanisms in New Conditions

51

L. M. Korytny, O. V. Gagarinova, E. A. Ilyicheva, N. V. Kichigina,
I. Yu. Amosova, and M. V. Pavlov

Landscape Hydrological Studies of Peak River Runoff in the South of Eastern Siberia in the Early 21st Century

67

A. A. Kurakova, R. S. Chalov, and E. R. Chalova

New Data on Effective Discharges of Russian Rivers

76

Zh. A. Balonishnikova and A. O. Eremeeva

Water Availability in the Russian Federation in a Changing Climate

87

S. A. Zhuravlev, S. V. Buzmakov, A. V. Yukhno, V. Yu. Georgievskii,
E. A. Grek, and V. A. Meshcherin

Hydrological Features and Causes of the 2024 Ural River Flood in the Orenburg Oblast

98

V. S. Vuglinskii

Problems of Assessing Water Loss due to Additional Evaporation from Flood Zones of Large Reservoirs: A Case Study for the Tsimlyansk Reservoir

109

G. M. Chernogaeva, M. Yu. Bardin, V. S. Vuglinskii, S. V. Dolgov,
N. I. Koronkevich, E. I. Kuprienok, E. A. Likhacheva, E. Ya. Ran’kova,
and O. F. Samokhina

Factors of Runoff Formation and the State of the Lena River Ecosystem in the 21st Century. Part 1: Natural, Climatic, and Anthropogenic Factors of the Lena Runoff Formation in the 21st Century

121

G. M. Chernogaeva, N. I. Koronkevich, S. V. Dolgov, M. M. Trofimchuk,
O. L. Romanyuk, E. I. Kuprienok, L. R. Zhuravleva, Yu. A. Malevanov,
E. A. Barabanova, and T. N. Kushnareva

Factors of Runoff Formation and the State of the Lena River Ecosystem in the 21st Century. Part 2: The Lena River Water Quality in the 21st Century

134