Such records are not available for most waters, however , and changes in water temperature, chemical composition, and water availability caused by unusual weather events cannot be predicted by records
ดังกล่าวบันทึกเป็นไม่สามารถใช้ได้สำหรับส่วนใหญ่น้ำอย่างไร, and changes in water temperature, chemical composition, and water availability caused by unusual weather events cannot be predicted by records