| TMDL End Point: |
(SEE TMDL REPORT, PP. 16, 36, 56)
THE TEMPERATURE TARGET IS A SURROGATE TARGET OF RIPARIAN VEGETATION HEALTH. THE TARGETS ARE DEFINED
IN TERMS OF RIPARIAN VEGETATION CONDITIONS. CONDITIONS WITHIN THE LOWER HANKS CREEK HAVE BEEN
SELECTED AS REPRESENTATIVE OF ACHIEVABLE "NATURAL" CONDITIONS. THE FOLLOWING TABLES SHOW THE
NUMERIC SURROGATE TARGETS FOR THE DIXIE CREEK AND HANKS CREEK TMDLS.
*BANK COVER TARGETS FOR DIXIE CREEK*
REACH (MILES FROM MOUTH)/BANK COVER TARGET
0-2.5: INTERMITTENT REACH -POTENTIAL UNKNOWN
2.5-9.0: AVG = 80, MIN = 50
9.0-13.5: INTERMITTENT REACH -POTENTIAL UNKNOWN
ABOVE 13.5: AVG = 80, MIN = 50
*******************************
*BANK COVER TARGETS FOR HANKS CREEK*
REACH (MILES FROM MOUTH): BANK COVER TARGET
BELOW CONFL. W/ SF HANKS CK: AVG = 80, MIN = 50
ABOVE CONFL. W/ SF HANKS CK: INTERMITTENT REACH -POTENTIAL UNK.
SF HANKS CK: AVG = 80, MIN = 50
********************************
THE LOWER 9.5 MILES OF HANKS CREEK HAS NOT EXPERIENCED ANY MAJOR FIRES FOR SEVERAL DECADES AND
HAS NOT BEEN GRAZED FOR THE PAST 20 YEATS. BANK COVER CONDITIONS FOR THIS STRETCH WERE ASSUMED TO
BE REASONABLY ACHIEVABLE "NATURAL" CONDITIONS AND THIS STRETCH WAS USED TO IDENTIFY TARGET
CONDITIONS FOR DIXIE AND HANKS CREEKS. BANK COVER CONDITIONS WERE ESTIMATED. FOR THE LOWER 9.5 MILES, BANK CONDITIONS RANGES FROM 30 TO NEARLY 100. MANY OF THE BANK COVER RATINGS EXCEED 70. HOWEVER, ONE LOW VALUE WAS DUE TO EXISTENCE OF A WATER GAP WHERE LIVESTOCK ARE ALLOWED ACCESS TO THE STREAM FOR DRINKING WATER. THE REMAINING LOCATIONS WITH LOW BANK COVER VALUES WERE ASSUMED TO BE PART OF THE NATURAL VARIABILITY OF THE SYSTEM. EXCLUDING THE LOWEST BANK
COVER RATING FOR THE UNGRAZED PORTION OF HANKS CREEK, THE AVERAGE BANK COVER VALUE WAS 80 WITH A MINIMUM VALUE OF 50. THESE VALUES WERE THEN USED AS THE TARGETS FOR THE OTHER REACHES AND TMDLS. |
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