RIO GRANDE FLOW / RESERVOIR CONDITIONS  
                 
The Rio Grande Flow Conditions are updated daily, Monday thru Friday at    
approximately 9:35 am Mountain Time/10:35 am Central Time.    
                 
                 
The following data are Provisional and are subject to revision.  Stage and flow determinations are made
for river conditions at approximately 7:00 am to 8:00 am Standard Time unless otherwise indicated.  
                 
  DATE STAGE DISCHARGE RAINFALL        
    METERS             CMS     MM        
RG BELOW CABALLO DAM 8-May-08   50.90          
RG AT EL PASO 8-May-08 1.475 14.20          
RG BELOW AMERICAN DAM 8-May-08 2.160 5.22          
AMERICAN CANAL 8-May-08 2.100 13.50          
RG AT FORT QUITMAN 8-May-08 1.690 1.90          
RG ABOVE RIO CONCHOS 8-May-08 1.240 0.37          
RG BELOW RIO CONCHOS 8-May-08 1.188 2.28          
RG AT JOHNSON RANCH 8-May-08 0.845 1.46          
RG AT FOSTER RANCH 8-May-08 0.475 8.36          
PECOS NEAR LANGTRY 8-May-08 0.555 4.07          
DEVILS AT PAFFORD 8-May-08 0.750 9.29          
AMISTAD DAM                
RG AT DEL RIO 8-May-08 0.490 13.90          
RG AT EAGLE PASS 8-May-08 1.065 37.60          
RG NEAR EL INDIO 8-May-08 2.035 65.70          
RG AT COLOMBIA                8-May-08 2.905 174.00          
RG AT LAREDO 8-May-08 0.935 60.70          
FALCON DAM                
RG AT RIO GRANDE CTY 8-May-08 8.780 144.00          
RG BL ANZALDUAS DAM 8-May-08 24.650 59.20          
RG AT SAN BENITO 8-May-08 10.700 11.10          
RG AT BROWNSVILLE 8-May-08 1.235 8.37          
                 
ANZALDUAS SALINITY 8-May-08 31.820 770 PPM        
                 
STORED WATER IN LARGE RESERVOIRS OF THE RIO GRANDE BASIN    
(Capacities and Storages in Million M3, Elevations in Meters)    
     
Reservoir                     Date Hour Normal Flood Current     24-hr    
    Cons. Control Elev.  Storage Storage    
    Capacity Capacity     Change    
                 
ELEPHANT BUTTE                
8-May-08 8:00 2496 2496 1323.930 682 3    
CABALLO                
8-May-08 0:00 280 403 1263.835 63 0    
AMISTAD                
8-May-08 0:00 4040 6025 335.890 2967 -2    
Requested 6:00 U.S. 40.00 CMS        
Release   MEX. 3.00 CMS        
FALCON                
8-May-08 0:00 3265 3897 84.570 1360 6    
Requested 6:00 U.S. 58.00 CMS        
Release   MEX. 87.00 CMS        
                 
                 
                 
MEXICAN RESERVOIRS  
(Storages in Million M3, Elevations in Meters, Releases in CMS)  
                 
Reservoir                     Date Hour Normal Flood   Current      **Usable Spill  
    Cons. Control Elev.  Storage    Storage or  
    Capacity Capacity       Release  
    RIO CONCHOS BASIN                
SAN GABRIEL                
7-May-08 8:00 255 255 1775.680 202 195 0.95  
BOQUILLA                
7-May-08 8:00 2903 2903 1310.970 1973 1859 51.80  
F.I. MADERO                
7-May-08 8:00 348 348 1233.410 185 180 3.50  
PICO DEL AGUILA                
7-May-08 8:00 50 50 1606.030 13 8 4.59  
CHIHUAHUA                
7-May-08 8:00 26 26 1535.910 11 9 0.05  
EL REJON                
7-May-08 8:00 6 6 1470.040 2 2 0.00  
LUIS L. LEON                
7-May-08 8:00 337 850 1033.970 274 234 7.00  
    RIO SAN DIEGO BASIN                
CENTENARIO                
7-May-08 8:00 26 26 334.600 18 17 0.70  
SAN MIGUEL                
7-May-08 8:00 20 20 340.280 15 15 0.00  
    RIO SAN RODRIGO BASIN              
LA FRAGUA                
7-May-08 8:00 46 46 299.770 43 34 0.00  
    RIO SALADO BASIN                
VENUSTIANO CARRANZA                
7-May-08 8:00 1384 1384 255.670 426 426 15.07  
                 
                 
    RIO ALAMO BASIN                
LAS BLANCAS                
7-May-08 8:00 84 84 87.970 60 36 6.08  
    RIO SAN JUAN BASIN                
EL CUCHILLO                
7-May-08 8:00 1123 1785 161.500 1018 958 6.08  
MARTE GOMEZ                
7-May-08 8:00 830 995 72.970 392 369 33.90  
                 
  Contributions from Rio Alamo and Rio San Juan to the Rio Grande are allotted 100% to Mexico per 1944 Treaty
  article 4 (a)                
                 
  FOR MARTE GOMEZ-- Normal Conservation Capacity is at top of concrete spillway    
                                            Top of Flood Control Capacity is at top of one-meter high      
                                            wooden flash board installation at spillway        
                 
** Usable storage is an estimate of waters in storage which could be released through existing outlet works.