The invention discloses a watercourse basin hydrological surveying and mapping device, and particularly relates to the technical field of surveying and mapping, the watercourse basin hydrological surveying and mapping device comprises a stand column arranged on the
bank side of a watercourse basin, a photovoltaic panel erected on the top of the stand column, an extension arm, a detection area arranged on the stand column and extending to a watercourse, and a
water level monitoring unit. The
water quality monitoring unit can complete dynamic adjustment along with the
water level of the river channel, surveying and mapping precision is improved, meanwhile, a recording mechanism is additionally arranged, the recording mechanism completes follow-up cooperation along with the
water quality monitoring unit, the change of the
water level of the river channel can be sensed, and real-time recording is completed through a receiving unit. Dynamic continuous drawing operation can be completed under the power-off condition, the problem that the
river water level change is missing under the condition that
electronic equipment such as a water level monitoring unit breaks down is solved, drawing data are enriched, the accuracy of river hydrological drawing is improved, the error rate is reduced, and guarantee is provided for
river water level surveying and mapping work.