SUBROUTINE RWQAGR(IWQTAGR)  
C  
C CHANGE RECORD  
C READ IN SPATIALLY AND/OR TEMPORALLY VARYING PARAMETERS FOR ALGAL  
C GROWTH, RESP. & PREDATION RATES, AND BASE LIGHT EXTINCT. COEFF.  
C (UNIT INWQAGR).  
C  
      USE GLOBAL  
      CHARACTER TITLE(3)*79, AGRCONT*3  
      OPEN(7890,FILE=AGRFN,STATUS='UNKNOWN')  
      OPEN(2,FILE='WQ3D.OUT',STATUS='UNKNOWN',POSITION='APPEND')  
      IF(IWQTAGR.EQ.0)THEN  
        READ(7890,50) (TITLE(M),M=1,3)  
        WRITE(2,999)  
        WRITE(2,50) (TITLE(M),M=1,3)  
      ENDIF  
      WRITE(2,60)'* ALGAL KINETIC VALUE AT', IWQTAGR,  
     &    ' TH DAY FROM MODEL START'  
      READ(7890,999)  
      READ(7890,50) TITLE(1)  
      WRITE(2,50) TITLE(1)  
      DO I=1,IWQZ  
C  
C        READ(1,51) MM,WQPMC(I),WQPMD(I),WQPMG(I),WQBMRC(I),  
C  
        READ(7890,*) MM, WQPMC(I),WQPMD(I),WQPMG(I),WQPMM(I),WQBMRC(I),  
     &      WQBMRD(I),WQBMRG(I),WQBMRM(I),WQPRRC(I),WQPRRD(I),  
     &      WQPRRG(I),WQPRRM(I),WQKEB(I)  
        WRITE(2,51) MM, WQPMC(I),WQPMD(I),WQPMG(I),WQPMM(I),WQBMRC(I),  
     &      WQBMRD(I),WQBMRG(I),WQBMRM(I),WQPRRC(I),WQPRRD(I),  
     &      WQPRRG(I),WQPRRM(I),WQKEB(I)  
      ENDDO  
      READ(7890,52) IWQTAGR, AGRCONT  
      WRITE(2,52) IWQTAGR, AGRCONT  
      IF(AGRCONT.EQ.'END')THEN  
        CLOSE(7890)  
        IWQAGR = 0  
      ENDIF  
      CLOSE(2)  
  999 FORMAT(1X)  
   50 FORMAT(A79)  
   51 FORMAT(I8, 14F8.3)  
   52 FORMAT(I7, 1X, A3)  
   60 FORMAT(/, A24, I5, A24)  
      RETURN  
      END